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Case finding for dementia during acute hospital admissions: a mixed-methods study exploring the impacts on patient care after discharge and costs for the English National Health Service
  1. Anne-Marie Burn1,
  2. Frances Bunn2,
  3. Jane Fleming1,
  4. David Turner3,
  5. Chris Fox3,
  6. Alexandra Malyon4,
  7. Carol Brayne1
  1. 1 Cambridge Institute of Public Health, University of Cambridge School of Clinical Medicine, Cambridge, Cambridgeshire, UK
  2. 2 Centre for Research in Public Health and Community Care, University of Hertfordshire, Hatfield, Hertfordshire, UK
  3. 3 Norwich Medical School, University of East Anglia Faculty of Medicine and Health Sciences, Norwich, Norfolk, UK
  4. 4 Addenbrooke’s Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, Cambridgeshire, UK
  1. Correspondence to Professor Frances Bunn; f.bunn{at}herts.ac.uk

Abstract

Objective Between 2012 and 2017 dementia case finding was routinely carried out on people aged 75 years and over with unplanned admissions to acute hospitals across England. The assumption was that this would lead to better planning of care and treatment for patients with dementia following discharge from hospital. However, little is known about the experiences of patients and carers or the impacts on other health services. This study explored the impact of dementia case finding on older people and their families and on their use of services.

Design Thematic content analysis was conducted on qualitative interview data and costs associated with service use were estimated. Measures included the Mini-Mental State Examination, the EuroQol quality of life scale and a modified Client Service Receipt Inventory.

Setting Four counties in the East of England.

Participants People aged ≥75 years who had been identified by case finding during an unplanned hospital admission as warranting further investigation of possible dementia and their family carers.

Results We carried out 28 interviews, including 19 joint patient-carer(s), 5 patient only and 4 family carer interviews. Most patients and carers were unaware that memory assessments had taken place, with many families not being informed or involved in the process. Participants had a variety of views on memory testing in hospital and had concerns about how hospitals carried out assessments and communicated results. Overall, case finding did not lead to general practitioner (GP) follow-up after discharge home or lead to referral for further investigation. Few services were initiated because of dementia case finding in hospital.

Conclusions This study shows that dementia case finding may not lead to increased GP follow-up or service provision for patients after discharge from hospital. There is a need for a more evidence-based approach to the initiation of mandatory initiatives such as case finding that inevitably consume stretched human and financial resources.

  • dementia
  • dementia case finding
  • cognitive impairment
  • service use
  • cost estimation
  • older people

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Strengths and limitations of this study

  • This is one of the first studies to investigate the impacts of a mandatory policy introduced nationwide without prior piloting, feasibility testing or evidence of effectiveness—case finding for dementia among all hospital patients aged ≥75 years whose admission was unplanned.

  • Qualitative research methods using topic-guided interviews enabled in-depth exploration of personal experiences of dementia case finding both during a hospital stay and of health and care services used subsequently.

  • As the focus was on those identified by case finding while in-patients, the study design sought to interview relatives/family carers as well as these former patients themselves.

  • Study limitations include a small sample size and a reliance on participants’ self-reporting of service use data.

  • It was beyond the scope of this study to track actual service use costs so our cost estimation draws on published unit costs data.

Introduction

Pre-existing cognitive impairment in hospitalised older people is estimated at between 15% and 42%.1–5 Many of these patients may not have had a previous diagnosis of dementia.3 6 This has led to concerns about providing adequate care for older people with dementia, and policy development to improve the identification of dementia in older people in hospital.7–10 In the English National Health Service (NHS) initiatives were introduced to increase awareness and improve the identification of dementia in secondary care.11–14 In 2012–2013, the Department of Health introduced a mandatory policy requiring that all hospitals across England routinely carry out cognitive assessments with ≥75-year olds who have had an emergency admission and that those identified as potentially having dementia are appropriately assessed and referred. The rationale for case finding in hospital was that early identification of cognitive impairment would lead to a timely diagnosis, informed patient care and improved health outcomes for older people.15 16 This was implemented in the absence of any randomised controlled trial evidence to know the impact of such an approach.

Although cognitive assessment tests can detect undiagnosed dementia,17–19 dementia does not fit the criteria for screening programmes and there are concerns over the impacts of case finding as well as screening for dementia.20 21 Moreover, in practice the distinction between screening and case finding is often not clear to clinicians and the public.22 23 Healthcare professionals have been reported as viewing case finding as a financially and politically driven policy with little or no evaluation of patient outcomes.24–27 In a previous paper, we reported how the variation in approaches to dementia case finding has meant that information communicated to primary care is inconsistent and has an impact on how well general practitioners (GPs) can effectively plan patients’ treatment and care once they are home in the community.27

Little is known about the wider impacts of dementia case finding on patient and carer experiences and on their access to dementia-related or other care services. The overall aims of this study were to explore the impacts of dementia case finding on older people identified by hospital case finding as warranting further investigation, their family carers and their use of health service and care services. For example, were they being reassessed in primary care and, if appropriate, receiving specialist referral, being given a diagnosis or receiving new services?

Methods

This study involved in-depth exploratory interviews with former hospital patients and their family carers. A range of qualitative and quantitative data was collected. This was the second phase of the CASCADE study (CASe finding in hospitals—impacts on CAre for people with DEmentia).28 Phase I results are reported in full elsewhere.27

We recruited former patients of two participating hospitals in the East of England. Eligible patients were aged at least 75-year olds, had been acutely admitted 6–12 months previously, had been flagged by dementia case finding as warranting further investigation about their cognition and were community dwelling. Family carers of these patients were also recruited for interviews. Invitation letters were sent to eligible participants from the hospital elderly medicine consultant under whose care they had been admitted, together with an information sheet and response form.

Semistructured interview schedules were developed to gather patient and family carers’ experiences and perceptions of dementia case finding and the impacts of case finding on their subsequent treatment and care (online supplementary file 1). Demographic data were collected and the Mini-Mental State Examination (MMSE)29 and EuroQol (EQ-5D-5L)30 validated scales were used to characterise patients’ cognition and health-related quality of life, respectively. For the analysis, those with a score below 24 on the MMSE were classified as cognitively impaired and those with a score of 24 and above were categorised as cognitively intact. EuroQol’s validated proxy version of the EQ-5D-5L was undertaken with carers to characterise patients in the minority of cases when a carer were interviewed separately from the former patient. Completed EQ-5D-5Ls were scored against the published algorithm and results from the scale’s five domains were used to characterise participants’ levels of difficulty in each.31 Data were collected on patients’ self-reported use of inpatient and outpatient services, day activity services since the index hospital admission, community care services and current medication. Service use was collected using relevant sections of the Client Service Receipt Inventory (CSRI)32 using ‘Visio’ timelines33 to facilitate recall and recording of events such as referrals or the start of new services. Two female researchers (A-MB, JF) carried out the interviews in the patients’ and family carers’ homes across four counties in the East of England (Bedfordshire, Cambridgeshire, Essex and Hertfordshire). Interviews lasted about an hour. Participants gave signed consent before the interview and interviews were tape recorded, transcribed and anonymised.

Supplementary file 1

An initial thematic framework was developed by the research team (A-MB, FB, JF) which was informed by the research questions and coding a selection of transcripts. The codeframe and the anonymised transcripts were transferred into NVivo V.11 and the data analysed using thematic content analysis.34 This enabled the key features of patients’ and carers’ experiences to be elicited from the data. Quantitative data were entered into an Excel spreadsheet.

Estimation of service costs 

Service use, reported by means of the modified CSRI, were costed using several sources. For community-based healthcare, we obtained cost per hour of staff time from a published source of unit cost data.35 Estimates of average contact time and the proportion of healthcare professionals time that would be spent on direct client contact were used to estimate a cost per contact.36 For some contacts respondents reported frequency rather than numbers of contacts, for example, three times a week. To convert this to numbers of contacts we required a time period, this was taken as the time difference between the date of discharge and the date of the interview. This duration therefore varied between individuals.

Costs for secondary care were obtained from NHS references costs.37 For elective inpatient admissions, we used a weighted average of either elective short stays or long stays. This gave estimates for the costs of elective stages of £616 for an elective short stay and £3058 for an elective long stay. For non-elective admissions, again a weighted average was obtained from NHS references costs, this was £3058 for long stays. For accident and emergency visits, a weighted average of £204 was used. A detailed estimate of the cost of memory services was available from the literature.35 This gave a cost per client of £1218. However, this was based on a different NHS trust and it is not clear how representative this would be of the service provided to participants in the current study. For memory-related drugs, a price was obtained from a published source.38 All costs are in UK pound sterling for the year 2015/2016. As the period of analysis was for 1 year only discounting was not used.

Patient and public involvement

Two well-established patient and public involvement groups were involved in the study; the University of Hertfordshire Patient Involvement in Research Group, and the University of Cambridge’s Public Involvement in Research into Ageing and Dementia Group. Four members of these groups acted as a User Reference Group for the study. They provided feedback on the aims of the study, study documents such as patient information sheets, and commented on preliminary findings from the qualitative analysis.

Findings

We conducted a total of 28 interviews involving 49 participants. Of those, 24 were former patients who had been identified as having a concern about their memory during an unplanned hospital admission and 25 were carers. Nineteen interviews were held jointly with the patient and their family carer(s). All patients had received a memory assessment during their hospital stay which indicated that there was a cause for concern over their cognition which warranted further investigation.

Table 1 summarises descriptive characteristics of the former patients in our study. Both their median and mean age was 85 (range 79–94) and just over half (53%) were women. The median MMSE score was 23.0 (IQR 16.5–26) indicating mild cognitive impairment, but there was considerable variation with scores ranging between 6 and 30. Patients had considerable levels of physical impairment and difficulty with activities of daily living, for example, nearly half were unable to walk and over a third had severe problems washing and dressing themselves. The EQ-5D-5L scoring system31 can provide scores between 1 and −0.594. This range has anchor points where 1 is considered to be full health and 0 is considered to be equivalent of dead. The scoring algorithm allows some scores to be <0, that is, worse than dead. Twenty-four former patients provided a value for their own health state and the mean value for these individuals was 0.39 (95% CI 0.25 to 0.52). There were 25 carers who provided a valuation of their own health with a mean value 0.78 (95% CI 0.69 to 0.86). For comparison, population norms are available for those aged over 75 years for the EQ-5D-3L39 which give values of 0.75 and 0.71 for males and females, respectively. The value obtained here for former patients is considerably below these values.

Table 1

Characteristics of the former patient sample

Impacts of dementia case finding on service use

Nine people had been assessed postdischarge either in a memory clinic or by an old age psychiatrist but two of these had already been referred by their GP prior to hospital admission. For the seven people who had been referred to memory services since hospital discharge it was not clear whether these referrals were a result of hospital case finding or not. Patients referred for investigation since discharge (n=7) generally had lower MMSE scores than those not referred (MMSE of 17 (IQR 15–22) versus 25 (IQR 19–26)). In the non-referred group, two patients had MMSE scores that indicated severe cognitive impairment and five had scores indicating moderate cognitive impairment. Five patients who were referred since case finding had been started on dementia medication (eg, donepezil, memantine), but two of these had stopped taking this medication within a fortnight because of side effects.

Estimates of the costs incurred by former patients of dementia case finding for the period between index stay discharge and interview are given in table 2. We had available data for 28 former patients, 24 where the patient was present at interview and 4 where only a carer was present. Precise costing was not generally possible, so these costs should be taken as indicative. This group have a mean estimated cost of £5180 (95% CI £2394 to £7967) in the period following the index stay. There is also considerable uncertainty around these cost estimates as indicated by the CIs. The major drivers of cost were inpatient and outpatient services, district nursing and home care worker. Comparatively few costs were specifically related to cognitive services, apart from memory clinics and some spending on memory-related drugs. There was also one GP home visit that was specified as related to memory assessment.

Table 2

Estimated service use cost since discharge from hospital

Two main themes emerged from the qualitative analysis (1) attitudes and experiences of dementia case finding and (2) patients’ and carers’ follow-up experiences. Examples quotes (Q=quotes) are given in tables 3 and 4.

Table 3

Quotes illustrating theme 1

Table 4

Quotes illustrating theme 2

Attitudes and experiences of dementia case  finding

Patients and carers were often unaware that memory assessments had taken place during their hospital admission and, in many cases, the patient had been assessed alone without a family carer being present or notified (Q1–2). For those carers who were aware of the memory assessment, they lacked information about the purpose or outcome of the test.

Although some patients and carers did not mind having a memory test in hospital (Q3), others felt that it was inappropriate to conduct such tests when someone was acutely ill (Q4–6, 9–10). Some patients reported feeling anxious about answering the memory questions incorrectly (Q7, Q8). There were examples of poor practice in terms of the way the test had been administered, such as the test being administered in an insensitive manner (Q11). Even when case finding had flagged up a concern about a patient’s cognition this did not appear to have impacted on discharge planning or the involvement of carers (Q12, Q13). For example, patients were being discharged with altered medication and the hospital did not inform the family carers (Q14, Q15).

Patients and carers’ follow-up experiences

There was a consistent pattern for patients and relatives in terms of their follow-up experiences. Most reported that they had not had a follow-up discussion with their GP about the dementia case finding outcomes or reassessment of their cognition postdischarge (Q16, Q17). Even though some had seen a GP or practice nurse since leaving hospital, they reported that the issue of dementia case finding had not been raised (Q18). Some carers contacted their GP about their relative’s memory but felt the follow-up was not always adequate (Q19–Q20). One carer could not understand why the hospital did not deal with their relative’s memory problem since they had identified it and felt this was another issue for carers to take on board (Q21).

Dementia case finding did not appear to have impacted on service provision postdischarge. Relatively few new services appeared to have been instigated and others, such as Occupational Therapy (OT) assessments and adjustments to the home, were not timely. While some families reported satisfaction with social care services, such as respite care (Q22), many others felt their needs were not being met. For example, carers coming at inappropriate times and the provision of poor care (Q23–Q25).

Discussion

Dementia case finding in acute hospitals involves the routine cognitive assessment of older people during an unplanned hospital stay and aims to improve the identification of patients with dementia in hospitals so that they could be flagged to their GP for further investigation and referral. This study aimed to explore patients’ and their families’ experiences of how this worked in practice. It was conducted in two acute hospital settings in the East of England where dementia case finding was implemented with little or no evaluation of its effectiveness in terms of improving patient outcomes. To our knowledge, this is the first study to explore the views and experiences of older patients and their family carers to case finding and to estimate the economic impact for the health service.

We spoke to patients and carers of patients who had been identified as having a concern about their cognition during their hospital admission. Although the median MMSE score of included participants at interview indicated that most patients had mild cognitive impairment, MMSE scores ranged from 6 to 30. The findings from this study suggest that there was little follow-up from patients’ GPs postdischarge and few further investigations or referrals or medication instigated due to dementia case finding outcomes; although in some cases, patients had already been seen by their GP prior to their hospital stay about their cognition. The lack of follow-up may not be surprising in light of the fact the outcomes of dementia case finding are often poorly reported to GPs.27

Patients and their families had mixed attitudes towards dementia case finding but many did not remember the assessment and/or did not appear to have been informed about what this would mean in terms of their subsequent care and treatment. There was also concern that the acute hospital setting might not be the best place in which to assess cognition. Indeed, 10 former patients had MMSE scores which indicated no cognitive impairment despite having been picked up by the case finding process when in hospital. In a previous paper, we reported that dementia case finding has raised awareness about dementia within hospitals.27 However, delirium is often undetected in hospitals40 and can increase the likelihood of reporting false positives and result in misdiagnosis of dementia.41

The results of the costing evaluation showed that participants/patients had average costs of £5180. The mean length of time over which these costs were incurred was 283 days, excluding the initial stay. Although these individuals had been identified from dementia case finding, the proportion of those costs attributed directly to services related to cognition appear to be small (~6%). This is not surprising as we found that few services had been instigated due to case finding. While the costs of services initiated in the community following case finding did not appear to be high, from health professionals’ reports of how case finding has been implemented in the previous phase of the CASCADE study27 it is likely that case finding is associated with significant costs within the hospital itself, though to our knowledge no research to date has quantified these yet. This suggests that an evaluation of the costs of such a policy, including the opportunity costs within the policy implementations system (Public Health England, NHS England) are warranted.

Limitations

The small sample size and the reliance on participants’ self-reporting are limitations of the study. Recruiting in this setting is challenging and only a small proportion of those who have experienced hospital case finding could be consulted for the study and may not be representative of the patient group even within the single settings. Patients found it difficult to correctly recall services received and the reason for those services. Therefore, it was difficult to judge whether services received were a direct consequence of dementia case finding. Carers were responsible for coordinating their relative’s care and consequently carers were able to provide more information than patients. The participants in this study may not be representative of others elsewhere in the UK, although no other such study has taken place to our knowledge. Since presentation of our findings to key policy makers the mandatory nature and financial incentives associated with dementia case finding are no longer in place. The study remains relevant as moves to promote case finding across health settings affect many countries and it serves as an illustration of the vital need to test policies before implementing them on the large scale.42 43

Conclusions

This study highlights that dementia case finding in hospitals did not necessarily lead to a GP follow-up or referrals for further investigation or lead to new supportive services being put in place. Often patients and their family carers were not informed that memory assessments had been carried out while in hospital or what the outcomes of the assessment would mean in terms of their future care and treatment. There is a need for a more evidence-based approach to the initiation of mandatory initiatives such as case finding. This includes evaluation of the costs of such a policy, including the opportunity costs within the policy implementations system.

Acknowledgments

The authors would like to thank all the participants in this study and Dr Catherine Rippingale, Dr Stephen Wallis, Rizaldy Tibio, Alice Robertson and Sara Jones for assisting in recruitment and their input through the Study Advisory Group. The authors would also like to thank Ms Marion Cowe, Dr Paul Millac, Mr Barry Plumpton and Mr John Willmott, members of the Patient Involvement in Research Group at the University of Hertfordshire who acted as the User Reference Group for the study.

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Footnotes

  • Contributors JF, FB, DT, CF, CB wrote the protocol. AM commented on the protocol, assisted with recruitment and commented on the paper. JF and A-MB collected the data. A-MB, JF, DT, FB analysed the data. A-MB, FB, JF and DT wrote the first draft of the manuscript. All authors contributed to the writing of the manuscript and approved its content. FB (the manuscript’s guarantor) affirms that the manuscript is an honest, accurate and transparent account of the study being reported; that no important aspects of the study have been omitted; and that any discrepancies from the study as planned have been explained.

  • Funding This article paper presents independent research funded by the National Institute for Health Research (NIHR) Collaboration for Leadership in Applied Health Research & Care (CLAHRC) East of England, at Cambridgeshire and Peterborough NHS Foundation Trust.

  • Disclaimer The views expressed are those of the author(s) and not necessarily those of the NHS, the National Institute of Health Research (NIHR) or the Department of Health and Social Care.

  • Competing interests None declared.

  • Ethics approval Ethical approval was obtained from South Central—Oxford C Research Ethics Committee (reference:15/SC/0728).

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

  • Data sharing statement No additional data are available.

  • Patient consent for publication Not required.

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