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Protocol for a pilot randomised controlled trial of an online intervention for post-treatment cancer survivors with persistent fatigue
  1. Teresa Corbett1,
  2. Jane C Walsh1,
  3. AnnMarie Groarke1,
  4. Rona Moss-Morris2,
  5. Brian E McGuire1
  1. 1School of Psychology, National University of Ireland Galway, Galway, Ireland
  2. 2Health Psychology Section, Psychology Department, Institute of Psychiatry, King's College London, London, UK
  1. Correspondence to Teresa Corbett; t.corbett2{at}nuigalway.ie

Abstract

Introduction Many post-treatment cancer survivors experience persistent fatigue that can disrupt attempts to resume normal everyday activities after treatment. Theoretical models that aim to explain contributory factors that initiate and sustain fatigue symptoms, or that influence the efficacy of interventions for cancer-related fatigue (CrF) require testing. Adjustment to fatigue is likely to be influenced by coping behaviours that are guided by the representations of the symptom.

Objectives This paper describes the protocol for a pilot trial of a systematically and theoretically designed online intervention to enable self-management of CrF after cancer treatment.

Methods and analysis This 2-armed randomised controlled pilot trial will study the feasibility and potential effectiveness of an online intervention. Participants will be allocated to either the online intervention (REFRESH (Recovery from Cancer-Related Fatigue)), or a leaflet comparator.

Participants 80 post-treatment cancer survivors will be recruited for the study.

Interventions An 8-week online intervention based on cognitive–behavioural therapy.

Primary and secondary outcome measures The primary outcome is a change in fatigue as measured by the Piper Fatigue Scale (revised). Quality of life will be measured using the Quality of Life in Adult Survivors of Cancer Scale. Outcome measures will be collected at baseline, and at completion of intervention.

Results The feasibility of trial procedures will be tested, as well as the effect of the intervention on the outcomes.

Conclusions This study may lead to the development of a supportive resource to target representations and coping strategies of cancer survivors with CrF post-treatment.

Setting Recruitment from general public in Ireland.

Ethics and dissemination This trial was approved by the Research Ethics Committee at National University of Ireland Galway in January 2013. Trial results will be communicated in a peer-reviewed journal.

Trial registration number ISRCTN55763085; Pre-results.

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Strengths and limitations of this study

  • The development of the intervention was informed by the Medical Research Council's guidelines on developing complex interventions, and was developed through the systematic application of theory, evidence, and user testing.

  • Despite being a complex and multifaceted intervention, transparency was sought by detailing the components of the intervention and the proposed mechanisms of change.

  • The complementary strengths of the quantitative and qualitative data collection methods employed here provide a comprehensive understanding of the needs of the target user group.

  • This evidence-based online program is the first intervention of its kind based on the self-regulation model of health and illness theory, with the primary aim of targeting the representations of fatigue and enhancing the self-management of cancer-related fatigue specifically. It also provides the first systematic coding of a cognitive–behavioural therapy intervention using the behaviour change technique taxonomy (v1).

  • Self-selection into the study may influence the outcomes, understating the actual effectiveness of the intervention. Self-reported information obtained from questionnaires may be inaccurate or incomplete.

  • Owing to resource constraints, a longer term follow-up will not be included in the initial pilot trial.

Introduction

This paper describes the protocol of a two-armed randomised controlled pilot trial that is designed to study the feasibility and potential effectiveness of an online intervention that aims to reduce the impact of fatigue in post-treatment cancer survivors.1 Up to 75% of post-treatment cancer survivors experience negative health-related consequences.2 Cancer-related fatigue (CrF) is the most common and disruptive symptom reported. CrF is a persistent, subjective sense of physical, emotional and/or cognitive tiredness related to cancer or cancer treatment.3 It is not proportional to recent activity, and interferes with usual functioning.4 It impacts the physical, emotional and/or cognitive functioning of the survivor. Guidelines recommend that if there is no evidence of a somatic condition causing the fatigue, behavioural interventions should also be considered.5 There is no recommended standard non-pharmacological treatment of CrF in those with cancer,6 highlighting a need for effective and accessible treatments.

CrF persists for months and even years following completion of treatment in about one-third of those with cancer.7 Fatigue that persists for 3 months or longer after cancer treatment completion is unlikely to decrease of its own accord.8 The causes of fatigue after cancer is unclear.

Theoretical models that aim to explain contributory factors that initiate and sustain fatigue symptoms, or that influence the efficacy of interventions for CrF require testing.6 In a Cochrane review of psychosocial interventions for reducing fatigue during cancer treatment, the effectiveness of interventions specifically designed for fatigue was significantly higher compared with interventions not specifically for fatigue.9

Bradbury et al10 note that deductive approaches (including reviews of the existing literature) are useful to ascertain what is already known about changing a behaviour and inform intervention design. A systematic review of the literature11 revealed that the most commonly used intervention strategies were cognitive–behavioural therapy (CBT), mindfulness-based interventions and psychoeducation. No single intervention type emerged as superior in this review, and a decision was made to base the current intervention on CBT. This decision was based on the quality and quantity of existing literature, as well as clinical expertise. The National Comprehensive Cancer Network (NCCN) has published guidance on supporting patients with CrF following treatment. Recommendations include the use of CBT.12 CBT is also recommended by the American Cancer Society/American Society of Clinical Oncology Breast Cancer Survivorship Care Guidelines.13

In line with the person-centred approach developed by Yardley et al,14 qualitative focus group research was carried out to explore the experience of CrF in post-treatment cancer survivors. Four focus groups were held with 18 cancer survivors who reported ‘significant fatigue or reduced energy’. A theoretical thematic analysis indicated that the participants' descriptions mapped onto the self-regulation model (SRM) of health and illness.15 This theory proposes that the representation of a symptom, such as fatigue, involves a cognitive pathway (ie, the creation of a knowledge-based conceptualisation of CrF) and an emotional pathway (ie, emotional response to CrF). Coping behaviours are guided by the representations of the symptom.16 This is an iterative feedback process of appraising coping efforts and representations of the problem, leading to further coping attempts. The study demonstrated the complexity of the individuals' meaning-making processes, and identified specific factors that were important issues for those with CrF. Participants did not always understand unexpected persistent fatigue after cancer and were left confused, isolated and frustrated as a result. This qualitative research indicated that the SRM could be applied to CrF in post-treatment cancer survivors, and provides a theoretical framework for understanding individuals' representations and coping strategies, and thus identifying targets for intervention.17 The intervention will incorporate Leventhal's self-regulation theory as a framework for conceptualising the process of adjustment.18

A CBT model of fatigue15 was used to apply SRM theory in a treatment model. CBT models focus on similar cognitive, emotional and coping/behavioural factors like those outlined by Leventhal et al.16 Andrykowski et al17 proposed that biological insults such as the cancer or its treatment may precipitate the initial experience of fatigue during cancer, whereas a cognitive–behavioural model of fatigue may predict the persistence of fatigue in survivorship. Using the SRM to describe fatigue after cancer provides an integrated theoretical model for developing interventions for fatigue based on cognitive–behavioural principles (figure 1).

Figure 1

From theory to practice: applying the self-regulation model to a cognitive–behavioural therapy treatment model.

As CrF is a multidimensional and complex symptom,18 an intervention mode that can incorporate multiple and complex behaviour change techniques (BCTs) was required.10 Chou et al19 encourage using internet to better serve survivors' needs as it is increasingly being used as a resource by cancer survivors.20 Online interventions have been found to be at least as effective as face-to-face therapies for a wide range of issues.21 This mode of delivery affords the opportunity to reach a wider range of patients compared with face-to-face interventions, especially severely fatigued patients or those with limited mobility. Although online interventions for fatigue after cancer have been tested elsewhere (eg, the RESTORE trial in the UK),22 little research has been conducted in regions that do not offer free universal healthcare. Owing to the lack of universal healthcare provision in Ireland, many individuals pay at the point of delivery.23 The cost of seeking care (reported in most cases to be €50 per visit) may be a deterrent to seeking primary care.24 The perceived ‘need’ of treatment for fatigue may influence an individual's willingness to pay for a general practitioner (GP) consultation.24

Many fatigued individuals do not discuss their symptoms as they perceive fatigue as an untreatable symptom to be endured as a normal part of cancer.25 Many also believe that interventions for fatigue are not available, and cite this as a barrier to opening a conversation about CrF.25

The home-based setting of an online intervention may be particularly beneficial to Irish participants, given reported inequity in care provision.24 Some survivors report wanting to move on with their lives, and no longer to identify as a patient with cancer.26 Therefore, the anonymity and privacy of an online program may be appealing. Participants can practice and incorporate new skills more readily into their daily lives when the intervention is incorporated into their current routine.21 ,27

An open-source web-development platform, LifeGuide was used to develop the program (http://www.lifeguideonline.org) in line with existing interventions of this nature.22 ,28 ‘LifeGuide’ is a set of open-source software that enables researchers to collaboratively create and evaluate interventions.29 This software allows non-programers to create and easily modify web-based interventions.10 This tool has been used by researchers to create websites which provide tailored long-term support for behaviour change (Michie et al.28 Researchers can rapidly test the effects of intervention components. LifeGuide easily facilitates modification and improvement of components at any stage of the intervention (Michie et al.28)

The intervention described in this paper will build on previous studies that have employed internet-based self-management programs,20 ,30 ,31 while applying a novel theoretical approach that addresses both individuals' understanding of and coping with CrF. The ‘Health Navigation’ trial by Yun et al30 incorporated the transtheoretic model of health behaviour change and social cognitive theory, as well as CBT. However, this trial did not assess the theoretical framework that was applied. Therefore, the mechanisms of the intervention are unclear. The current study will employ Roth and Pilling's32 competence framework for CBT for those with persistent physical health conditions. Adjustment to fatigue will be a primary focus of the intervention, with cognitive, behavioural, affective and social responses being addressed.33 This evidence-based online program is the first intervention of its kind based on the SRM, with the primary aim of targeting the representations of fatigue and enhancing self-management of CrF specifically. The study also provides the first systematic coding of a CBT intervention using the BCT taxonomy (v1).34 This was to reduce the ‘black box’ criticism of complex interventions34 by providing a transparent description of the intended intervention, and how it is expected to work.35

The goal is to improve functioning, and to enable the participants to make meaningful changes in their daily lives, rather than symptom reduction per se. The aim is to determine the feasibility of the ‘REFRESH (Recovery from Cancer-Related Fatigue)’ intervention trial. It will also assess the overall impact of the intervention on fatigue and propose mediating factors in cancer survivors. It is hypothesised that an online intervention designed using a theoretical, systematic and person-based approach will be successful in reducing the effects of fatigue in post-treatment cancer survivors.

Specific objectives

  1. To conduct an evaluation of the feasibility of the intervention by looking at:

    1. Recruitment (number of patients approached about the study, source of referral to the study, number consenting to participate, and those eligible to be randomised);

    2. Adherence and attrition to the trial;

    3. Evaluation of functionality, acceptability and usability of website;

    4. Participant satisfaction with the website.

  2. To assess the potential efficacy of the ‘REFRESH program’ in adult survivors of cancer. Changes in fatigue will be assessed by comparing intervention and wait-list control groups at baseline and postintervention in terms of the following outcome:

    1. Fatigue (primary outcome)—assessed using the Revised Piper Fatigue Scale (PFS-R);36

    2. Quality of life (QoL; secondary outcome), as measured using the Quality of Life in Adult Cancer Survivors (QLACS) Scale.

  3. To explore change in potential therapeutic mechanisms of change in relation to fatigue outcomes. Changes will be assessed by comparing intervention and wait-list control groups at baseline and postintervention in terms of the following outcomes:

    1. Illness perceptions relating to CrF;

    2. Cognitive–behavioural coping strategies used in the management of fatigue;

    3. Appraisal of coping.

Ethical approval

This design and testing of the trial was approved by the Research Ethics Committee at National University of Ireland Galway in January 2013. Full written informed consent will be sought from all participants for their participation and the publication of the results of the research. Participants will be reminded that they are free to withdraw at any time, and that their data will be stored securely and anonymously. All data will be stored on password-protected hard drives in accordance with the Data Protection Act. All data will be anonymised. Recruitment is currently ongoing.

Methods

The study is designed as an exploratory, parallel-group pilot randomised controlled trial (RCT) to determine the feasibility, potential effectiveness (as assessed using Piper Fatigue Scale,36) and acceptability of an online CBT intervention for CrF called REFRESH. The study will include two parallel conditions: experimental conditions (online CBT for fatigue), and a wait-list control condition. Feasibility will be measured by assessing recruitment, willingness to be randomised, attrition, adherence and completion of outcome measurements. Acceptability will be assessed by participant satisfaction with the intervention. Participants will be randomised to receive either the online intervention, or a widely available leaflet comparator developed by the Irish Cancer Society called ‘Coping with Fatigue’ (available online as a pdf).37 This booklet is currently widely available as a source of information about fatigue. The intervention group will access an interactive CBT for CrF intervention (REFRESH). Participants will be asked to complete a session each week for 8 weeks. Assessments will be conducted at baseline and immediately after intervention (at 10 weeks).

Participants

A total of 80 Irish cancer survivors will be randomised to receive the intervention or usual care.

Inclusion and exclusion criteria

Participants are eligible for the study if they

  1. Are over 18 years of age,

  2. Have completed primary treatment with curative intent for non-metastatic cancer at least 3 months prior to baseline assessments,

  3. Are experiencing fatigue defined as scoring ≥4 on a unidimensional 11-point numeric rating for fatigue as suggested by the National Comprehensive Cancer Network,3

  4. Are able to complete written records in English,

  5. Have or are willing to create an email account and have access to the internet,

  6. Have access to, and basic ability to use a computer,

  7. Have completed primary treatment for cancer (patients are eligible for the study if they are receiving maintenance therapy, such as hormone therapies) at least 3 months prior to baseline assessment.8

Patients will be excluded if they

  1. Do not provide informed consent or refuse to be randomised,

  2. Have no evidence of metastatic disease,

  3. Do not confirm that they have received medical clearance for participation,

  4. Are currently participating in any other psychosocial intervention.

Recruitment

It is intended to recruit 80 participants who have completed primary treatment with curative intent for non-metastatic cancer at least 3 months prior to baseline assessments. Recruitment will take place from October 2015 to April 2016.

Online recruitment

An online recruitment strategy will run separately and concurrently with the rest of the research recruitment campaign in order to broaden the exposure.38 Social media sites will be used to target cancer survivors engaged in online activity. Use of popular existing social network sites are expected to address issues of reach, engagement and retention.39 Online social networks have been found to typically achieve high levels of user engagement and retention. Social media enables the researcher to actively generate engaging and novel content, which is likely to be more influential than traditional static and passive websites.40 These are a cost-effective means of recruitment that may engage potentially difficult-to-reach groups, providing participants a more accessible method by which to participate in health research.40 These websites will inform potential participants of the study and provide a link to the survey.

  1. WordPress will be used to develop a host website for the study. Participants will be able to access the participant information sheet and links to the online questionnaire on this site. Another page will give description of the study investigators. Pictures and engaging content will be posted to build rapport and credibility with the audience.38

  2. A Facebook fan page will be created to recruit participants and raise awareness of the study.38 Posts will include study announcements, links to the WordPress website, pictures and videos featuring the primary researcher discussing the project. Posts will be scheduled in advance, with about a new post per day during the recruitment period. Other Facebook fan pages, with similar purpose or interest, will be interacted with by ‘liking’ these organisations' pages, which were found using keyword searches for cancer, oncology and healthcare. ‘Facebook Adverts’ will be used to advertise the study to a large number of social media users.

  3. Twitter will be used to target individuals using short messages (tweets) to share online material, including links to the REFRESH WordPress website. Users will be encouraged to share (ie, ‘retweet’) these messages with their own followers.40 Stakeholders and key influencers will be targeted in particular. These include patient advocates and healthcare professionals. Organisations affiliated with cancer survivorship will be followed. Hashtags (#) related to cancer, fatigue and related topics will be used to reach a large audience of potential participants.38

  4. LinkedIn groups that included content related to cancer survivorship will be used to reach potential participants. Again, these messages will target those people living with CrF, cancer survivorship advocates, healthcare professionals working in oncology and psycho-oncology, and other researchers. Group members will be asked to share the survey link with other potentially interested groups or individuals.38

Offline recruitment

The offline recruitment strategy will centre on interaction with community organisations and leaders.41 Cancer support groups, and national cancer charities and organisations will be contacted and asked to promote the study. Researchers will also recruit in-person at the Irish National Cancer Survivorship Conference in September 2015.

Media outlets will be contacted via press releases, with information about the study being promoted nationally in press and on the radio. Printed advertisements (such as leaflets) will be distributed in local pharmacies and coffee shops.

Health system recruitment will also be employed, given the importance of physician referrals as gatekeepers to patient research recruitment.41 GPs and healthcare professionals will be informed about the study. They will be encouraged to share the information with any patients who may benefit from partaking in the research.

Trial procedures

Interested participants will be invited to access a recruitment website hosted on WordPress. This website details study procedures and inclusion/exclusion criteria. After reading this information, participants will be invited to complete baseline assessments using an online survey tool (Survey Monkey). Participants will then be required to provide informed consent outlining their awareness of the trial protocol. Participants who do not meet the inclusion/exclusion criteria in the baseline assessment were excluded from the study.

Randomisation and blinding

Participants will be randomised in a 1:1 ratio to receive either the REFRESH intervention, or a leaflet comparator developed by the Irish Cancer Society, Coping with Fatigue. On completion of the baseline questionnaire, participants will be randomised to the wait-list of either the control or intervention group. Participants will randomised in blocks of six using a computer-generated number sequence that was created a priori by using Random.org.42 An independent research assistant will email participants to inform them of their group allocation. The research team will be made aware of group allocation in advance of the half-way contact point with participants. The nature of the trial is such that blinding of participants cannot be achieved. No changes in assignment will be possible until after the trial period. Figure 2 shows the flow of participants through the trial.

Figure 2

Planned flow of participants through the REFRESH randomised controlled trial. CBT, cognitive–behavioural therapy; REFRESH, Recovery from Cancer-Related Fatigue.

Control group/usual care

The control group will receive an online copy of a booklet with brief general recommendations about fatigue management that was designed by the Irish Cancer Society.37 This will contain some general information about CrF. After completion of this study, control participants will be given the opportunity to access the REFRESH program. Online user data gathered in the postassessment period will be analysed to evaluate user processes such as engagement, and dose of intervention received.35

Intervention

The REFRESH online intervention was developed using LifeGuide, an open source software.43 The intervention is a web-based online program that can be accessed from any location or device with internet access.29 The purpose of this intervention is to target individuals' illness representations and coping strategies in order to facilitate coping with CrF. Table 1 summarises the intervention, and the association of the components with the SRM model and CBT. In order to describe intervention content and avoid the problems of lack of consistency across interventions, the BCT taxonomy (v1) was employed.44 A BCT is an observable, replicable and irreducible component of an intervention designed to alter or redirect causal processes that regulate behaviour.44 To our awareness, this is the first instance of the BCT taxonomy being used to specify components of a CBT intervention.

Table 1

Intervention phases, cognitive–behavioural therapy (CBT) intervention techniques, proposed mechanisms of change and theoretical constructs targeted, and behaviour change techniques employed

Content

The information provided in this website was developed based on the Medical Research Council (MRC) guidance.34 It draws on the findings of a systematic review of the literature relating to psychological interventions for CrF. The content is also based on qualitative research conducted with cancer survivors suffering with persistent fatigue after the completion of curative treatment.

The structure and layout has been designed in line with previous CBT interventions, in particular, the ‘Understanding and Managing Persistent Cancer-Related Fatigue manual45 and the MSInvigor8 trial.31 ,46 Aspects of the intervention relating to thoughts and emotions also draws on the principles of CBT as outlined in the ‘Feeling Better’ manual.47 An expert design team supported the development of REFRESH. These included Health Psychologists and Clinical Psychologists. A nurse, cancer care staff and a cancer survivor also contributed to the design of the program. The CBT intervention techniques used in this intervention are based on those outlined in the competence framework for psychological interventions with people with persistent physical health conditions, developed by Roth and Pilling.32 These are presented in table 1. Further information and specific components of the intervention were also informed by the available evidence on symptom focusing,48 activity scheduling, insomnia management49–51 and stress management52 in patients with cancer.

The REFRESH intervention was created with the goal of providing participants with a user-friendly, engaging and effective online environment while affording them the opportunity to learn more about their fatigue symptoms and management. Figure 2 shows the basic structure of the program. Given online security concerns, all user data are protected.

Procedure of the intervention

Participants in the intervention group will be asked to sign-up for the REFRESH program with their email and unique password. New users will receive instructions on the ‘About REFRESH’ page before logging in. The page includes an introduction to the aims of CBT and step-by-step instructions for how to navigate the program.

The intervention requires 45–60 min/week over 8–10 weeks. The online intervention is accessed through the main welcome page. Once logged in, each user is presented with a personalised ‘Home Page’ (see figure 3) that provides information about the last time the user logged in. The screen allows for easy navigation to each of the main sections of the site: ‘Useful Content’, ‘Sessions’ and ‘About the program’. ‘Useful Content’ contains useful links that are relevant to participants (links to cancer support service websites, etc) and the printable elements of the program such as diaries and tips. ‘About the program’ tabs offer information about how to contact the research team, a ‘Frequently Asked Questions’ (FAQ) page addressing technical issues, and a ‘What is REFRESH’ tab that provides a brief introduction to the system, and a ‘Who made REFRESH?’ tab that introduces participants to the research team involved in developing the program. The ‘Disclaimer’ tab reminds users that the information provided is for educational purposes only, and should not replace or override a physician's care.

Figure 3

Basic structure of the REFRESH program. FAQs, Frequently Asked Questions; REFRESH, Recovery from Cancer-Related Fatigue.

Every session follows a similar structure: objectives and outline, main content, review and to-do list. This can be seen in table 2. Each of the eight sessions acts as an online analogue for the weekly sessions conducted in traditional in-person CBT. The intervention content incorporates the essential treatment elements of CBT: educational, behavioural and cognitive techniques.53

Table 2

Structure of each session in the REFRESH (Recovery from Cancer-Related Fatigue) program

The intervention involves a high degree of interactivity and personalisation. In addition to using the individuals name at various stages of the intervention, personalisation also occurs in the form of reshowing unique user information. Participants are asked to identify problems associated with their fatigue. These problems are later presented as part of goal-setting exercises in order to remind participants to set specific goals that are relevant to them. Participants are also presented with a personalised CBT model of fatigue based on answers about their feelings, actions and cognitions pertaining to their fatigue symptoms. Users are free to revisit a session as many times as they choose. Answers will be saved and presented to allow participants to review their progress. Further personalisation occurs in the form of in-session exercises in which users are asked to describe the specifics of their experience with CrF.

Participants are encouraged to challenge cognitions and learn to prioritise certain behaviours in order to maintain a healthy energy balance. REFRESH includes a range of BCTs designed to enhance relevant information, motivation and behavioural skills. The program utilises accessible and engaging delivery methods that are in line with Ritterband et al's54 theory of online interventions. Table 1 shows each phase of REFRESH the change targets, BCTs used, and the method and agent of delivery.55

The hypothesis is that targeting cognitive and emotional representations of symptoms will lead to improvements in coping skills and, in turn, reduce fatigue levels. These processes may be moderated by cancer-related factors (eg, diagnosis, treatment type, time since treatment) and demographic factors (eg, gender, socioeconomic circumstances, education).

Telephone calls

The effectiveness of internet-based interventions has been found to be enhanced by the use of additional methods of communicating with participants.55 A semistructured interview guide will be followed in each of these calls. The structure has been outlined in a manual to enable replication. The calls will be made by the primary researcher who has a background in Health Psychology, and experience in working with patient groups. Each group will receive one phone call after 4 weeks of the program (ie, half-way). Each phone call will last 15–20 min. For the intervention group, the aim of these calls will be to solve any problems with the sessions or content. Also, messages of encouragement will be given to stimulate adherence to the program. The wait-list control group will be called to remind them that they can gain access to the program in the weeks that follow. Calls will be audio recorded and checked for fidelity. The content of these calls may also be used to guide improvements for future iterations of the website.12

Intervention fidelity

A content manual has been developed to accompany this intervention. The ‘Intervention Manual’ describes and defines the program components for each module. The website will include features to monitor adherence and completion rates of each module by each user. Individual factors which may affect fatigue and/or energy level (medication use, comorbidities, physical disability, etc) will be documented for control and intervention groups.

Follow-up measurement, assessment and outcomes

Timing of assessments

Participants will be recruited and assessed at baseline from October 2015 to September 2016. Outcomes are self-reported at baseline (T0), postintervention (T1). Figure 1 shows a schematic summary of the trial design. Participants are expected to complete one session per week for 8 weeks. Follow-up data will be collected on completion of the trial, 10 weeks postbaseline. Additional qualitative feedback will be obtained through explorative open-ended questions at T1 for participants in the experimental condition. After completion of follow-up assessments at T1, participants in the control condition will be offered the experimental intervention. Participants (intervention and control group) will continue to have access to the REFRESH program for 2 months following completion of the follow-up questionnaires.

Methods for dealing with loss to follow-up

This pilot trial aims to assess attrition rates for a future large RCT. In order to reduce loss to follow-up, the researchers will aim to foster trusting relationships to help the participants to feel engaged in the research process. All participants will be contacted via telephone in the fourth week of the program to enhance this relationship. Familiarity with the researchers will be promoted through the use of familiar and consistent voices in the narration of videos used in the online program. Participants will be able to access a page entitled ‘About us’, which will include photographs and brief biographies of each the researchers.

Participants will be reminded of their commitment to the program at the outset of the intervention in order to promote a sense of self-responsibility. Participants will be congratulated on completing a module in order to boost self-esteem and garner a sense of achievement. At the end of each session, participants will select the time to receive one prompt email to continue to the next session in the week that follows.

Outcome measurements

Assessments will be undertaken online. Assessors of outcomes will be blinded to group allocation until after baseline measures have been completed.

  1. The primary goal of this study is to assess the feasibility and functionality of an online CBT program for this sample. Therefore, the following outcomes will be assessed

    • I. Recruitment and uptake,

    • II. Adherence and attrition

    • III. Evaluation of functionality and usability of website,

    • IV. Participant satisfaction with website.

This feasibility trial aims to provide insight into the way REFRESH is used by participants. Information on intervention uptake, delivery and experience will be collected. Delivery and uptake will be determined by assessing initial uptake to the program, and participation in each of the sessions. This is outlined in figure 4.

Figure 4

Uptake and participation assessment. REFRESH, Recovery from Cancer-Related Fatigue.

Adherence to and engagement with the program will also be assessed. In order to determine the ‘intensity’ of the intervention components delivered, the ‘engagement’ of participants will be assessed. Data relating to pages visited and time spent on each page will be collected in LifeGuide.29 These data will be used to gain a sense of how participants engaged with the program. Criteria for assessing engagement for each individual are:

  • Active participation in 90% of at least four of the REFRESH sessions,

  • Completion of exercises within the sessions,

  • Level of engagement with course materials.

The Internet Evaluation and Utility Questionnaire measures participants' experiences and perceptions of the intervention. This measure has two main sections—generic and specific. In an earlier and shorter version of this measure,49 good internal reliability was found (α=0.69). Patients respond to the questions on a five-point Likert scale from 0 (not at all) to 4 (very), with two open-ended items requesting patients to identify ‘most helpful’ and ‘least helpful’ parts of the web program.

  • The first 15 questions make up the generic section. The constructs measured by items 1–8 include ease of use, convenience, engagement, enjoyment, layout, privacy, satisfaction and acceptability.

  • Items 9–15 assess perceptions of the web program material in terms of usefulness, comprehension, credibility, likelihood of returning, mode of delivery and helpfulness.

  • Following these 15 items are questions specific to the REFRESH intervention.

Open-ended questions will also be asked for all participants at follow-up to obtain further qualitative data on the barriers and facilitators to participation as well as to understand the experience of participating. These questions will be included at the end of the follow-up questionnaire. Those who withdraw from the intervention will be invited to participate in an exit interview/debrief with the principal investigator.

  • 2. To assess the effectiveness of ‘REFRESH intervention’ in long-term adult survivors of cancer by comparing intervention and wait-list control groups

Primary outcome: Fatigue as measured by the PFS-R.36 This scale assesses adjustment and interference of fatigue. The scale is multidimensional and incorporates key dimensions of the fatigue experience, including cognition, behaviours, affect and sensory symptoms.56

The PFS-R consists of 22 items measured on a 10-item numeric rating scale of the items. Higher mean scores represent greater fatigue. Four open-ended questions are also included as descriptive items. Reported Cronbach α have ranged from 0.98 for the total scale and 0.94 for subscales in women with fatigue after cancer treatment,57 indicating good internal consistency. Research has demonstrated good psychometric properties, with high concurrent validity with the FQ (r=0.80) and good test–retest reliability results (r=0.98).58 The scale has been validated in a group of cancer survivors.59 This multidimensional measurement model is in keeping with the theoretical framework being assessed in the intervention, as well as reflects the complex nature of the fatigue experience.5 The scale is cited by the NCCN guidelines for the management of CrF as a commonly used scale.3

Secondary outcome: QoL as measured by the QLACS questionnaire60

The QLACS is a multidimensional measure with 47 items that assess 12 QOL domains. It includes negative feelings, positive feelings, cognitive problems, pain, items, sexual interest, energy/fatigue, sexual function, social avoidance, financial problems, benefits, distress-family, appearance and distress-recurrence. Participants are asked to rate how often they felt a certain way in the past 4 weeks (never, seldom, sometimes, about as often as not, frequently, very often, always). The scale is validated in a range of cancer types61 and has good internal consistency reliability, and adequate concurrent and retrospective validity.62 Sohl et al63 concluded that the QLACS is consistent with other widely accepted measures in capturing QoL, and also assesses specific issues relevant to post-treatment cancer survivors.

  • 3. To assess the relationship between therapy process and outcomes

In line with the recommendations of the competence framework for psychological interventions with people with persistent physical health conditions, this trial will also incorporate measures that aim to further explore the relationship between therapy process and outcomes. Therefore, drawing on the theory of the self-regulatory model of illness16 the following outcomes will also be assessed. This is outlined in figure 5.

  1. The Illness Perceptions Questionnaire for CrF (IPQ-R) will be used to assess perceptions relating to CrF cognitive and emotional representations. The IPQ-R for CrF64 is adapted from the IPQ-R.65 The scale is divided into three sections. Section A assesses CrF identity and asks respondents to report (1) whether they have experienced each of a list of 14 commonly experienced core symptoms, and (2) whether they believe each of these symptoms is specifically related to their CrF using the yes/no response format. The list of symptoms included in the identity dimension is tailored to CrF by including 12 symptoms specifically associated with this condition, based on the CrF diagnostic criteria.36

Figure 5

Proposed assessment of self-regulation model theory.

Section B contains 38 items that assess the timeline acute/chronic, timeline cyclical, consequences, personal control, treatment control, illness coherence and emotional representation dimensions.36 These items consist of statements that are rated on five-point Likert scales ranging from 1 (strongly disagree) to 5 (strongly agree). The mean of the subscale items measures that illness dimension. Section C is concerned with the cause dimension. Respondents indicate whether they believe each item, in a list of items, causes or contributes to their fatigue using the same five-point Likert scale. The scale has been validated on patients with cancer and survivors.36

The Cognitive and Behavioural Responses to Symptoms Questionnaire (CBSQ) will be used to assess which cognitions and behaviours mediate the effect of CBT on fatigue in this group. The CBSQ consists of two behavioural subscales and five cognitive subscales. These subscales measure aspects of the response to (or coping strategy employed to manage) symptoms. The CBSQ subscales have an acceptable internal reliability. The scale has previously been used in MS patients.66 All items are scored on a five-point frequency scale ranging from never (0) to all the time (4). Item scores are added from each subscale to obtain a total score.66 The scale includes ‘cognitive subscales’ which assess interpretation of the symptoms. These include: fear avoidance, catastrophising, damaging beliefs, embarrassment avoidance and symptom focusing. It also includes ‘behavioural subscales’ which measure all-or-nothing behaviour (tendency of patients to overexert themselves, followed by periods of inactivity) and avoidance/resting behaviour.

  • II. Appraisal of coping: the coping efficacy scale67

Coping efficacy will be measured to assess respondents' appraisal of coping with fatigue. Participants will be asked ‘How satisfied are you with how you coped with your fatigue?’ referring to the past week. The second item will be, ‘If you had similar symptoms again, how certain are you that you would be able to adjust well to its negative aspects?’ referring to the past week. Participants were asked to indicate on a five-point Likert scale about how certain they were that they could cope with similar symptoms in the future. The scores of these items will be averaged to produce one composite score of coping efficacy. A score of 1 will indicate low coping efficacy, and 10 will indicate high coping efficacy. Evidence for the validity of these measures of coping efficacy is strong.67 ,68

  • 4. Demographic and cancer-related information

Possible moderating variables (individual demographic factors and medical-related factors) will be taken from baseline data. Demographic (age, gender, marital and employment status) and medical information (cancer type and treatment, time of diagnosis and treatment, comorbid medical conditions) will be obtained via self-report.

Sample size

The primary aim of this study is to assess initial uptake of the study and following attrition. Figure 1 shows the flow diagram of the study participants. A process evaluation will investigate how the intervention was delivered, how it might be replicated and improved on.35

In line with guidelines for the calculation of sample size in pilot studies by Viechtbauer et al,69 an estimated sample size of 59 cancer survivors would be required. The calculation allows for the identification of unforeseen problems, such as ambiguities in description of the trial or eligibility criteria, or misinterpretations of questionnaire items. If a problem is likely to occur with 5% probability in a participant, the issue would be identified (with 95% confidence) in a pilot study including 59 participants.69

Mechanisms of impact and effectiveness will only be assessed if a sufficient number of participants are recruited.35 According to G*power,70 54 participants would be required to demonstrate statistically significant group differences in the primary outcome over time at the 0.05 level (d=0.25).

Statistical analyses

Where hypothesis tests are carried out, these will be at the 5% level for primary and secondary outcomes. All analyses will be planned a priori and reported in full. The reporting and presentation of this trial will be in accordance with the CONSORT guidelines for randomised trials,1 with the primary comparative analysis being conducted on an intention-to-treat basis. Mean and SD will be used to represent the variable scores at baseline and follow-up measurements.

Study population will be characterised using various descriptive statistics parameters. Initially, possible differences between groups at baseline will be assessed using a one-way analysis of variance (ANOVA) for continuous data (or equivalent statistical approach in the case of non-parametrical data), and χ2 for categorical data.

Comparisons of outcome measures will be undertaken at baseline and 10 weeks for all available measures. Between-group comparisons will be made using a 2 (group)× 2 (time) mixed ANOVA.

Although the trial is not powered to detect the influence of mediating and moderating factors on fatigue, we will explore possible interactions in the following secondary analyses: (1) interaction terms will be examined to investigate possible differences in intervention effects on the primary outcome by demographic and cancer-related factors; (2) engagement with REFRESH will be determined, and a comparison between those who meet the criteria for engagement versus those who do not will be undertaken to assess ‘per protocol’ effectiveness; (3) a mediational analysis exploring whether the effect of the intervention on the primary outcomes is mediated by illness perceptions and cognitive–behavioural strategies, using the analytic framework recommended for RCTs, will also be undertaken.

Data management and access

This data management plan has been created using the UCD Data Management Checklist. The data will be saved online through Surveygizmo (all other tasks and questionnaires). These data are only accessible by the first author. When these data are collated, the second author will also have access to the relevant data files. The data will be saved in .csv and .sav formats. These files will be stored in encrypted Dropbox folders. A detailed logbook will be created to complement these files. We do not currently have ethical approval to share these data. In accordance with the NUI Galway data retention policy, these data will be retained for 5 years at the NUI Galway School of Psychology (as well as being backed up on Dropbox), and anonymised by replacing participant ID numbers and names with randomly generated participant ID numbers.

Discussion

REFRESH has been developed according to the MRC guidance for developing and evaluating complex interventions.34 The content is based on the SRM which proposes that coping behaviours in response to a symptom, such as fatigue, are guided by cognitive and emotional representations of that symptom. This approach has guided the linking of theory to specific cognitive–behavioural intervention techniques and mechanism of change targets. This evidence-based online program is novel in its approach as it is based on SRM theory. The primary aim is to understand individuals' lay representations of a commonly misunderstood symptom, and enhancing the self-management of CrF specifically. It also provides the first systematic coding of a CBT intervention using the BCT taxonomy (v1). In line with the TIDieR checklist and guide,70 the aim is to provide sufficient details to allow replication, including how innovative recruitment modalities can be harnessed to engage those who are already active online.71

The website has been systematically and theoretically developed for an Irish population by working with cancer care teams, clinical psychologists and cancer survivors suffering with fatigue. This study will provide additional insight into the efficacy of the intervention and allow the researchers to understand the experience of the participants. This will enable any necessary post-trial modifications or remodelling in order to enhance the effectiveness of REFRESH prior to the development of a larger scale RCT of the program.

Throughout the design of this program, the developers were cognisant of the need to develop interventions that not only incorporate theory, but also aim to evaluate the application of specific theoretical frameworks. The systematic theoretical underpinning of ‘REFRESH’ will allow the researchers to gain an insight into how some psychological and behavioural variables (mediators) are related to fatigue. However, in the feasibility trial described here, the study will not be powered to assess these potential effects.

The primary outcome measure for REFRESH is fatigue as measured by the PFS-R at 10 weeks post baseline for this pilot trial. An extension of the timing of the main outcome measure in future iterations of the trial will allow for the assessment of any sustained effect on outcomes.

The results from this trial will provide information regarding the potential of a novel theoretical approach to online interventions for CrF in post-treatment cancer survivors. The research seeks to create supportive online environments at home to ameliorate fatigue, and promote self-management of symptoms in this group. Any amendments or updates to this protocol will be lodged with the journal such that it links them to this protocol document. This will allow all future trial publications and conclusions to be assessed against the extent to which we have adhered to the protocol.

Trial status

The trial and recruitment is ongoing.

References

View Abstract

Footnotes

  • Twitter Follow Teresa Corbett at @Treasa_corbett

  • Contributors TC conceived of the study, its design and coordination, and drafted the manuscript. JCW, AG, RM-M and BEM participated in the design of the study, and revisions to the manuscript. All authors read and approved the final manuscript.

  • Funding Cancer Care West Hardiman Scholarships, National University of Ireland Galway.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.

  • Data sharing statement Further information available from first author.

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