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Interventions to encourage smoke-free homes in remote indigenous Australian communities: a study protocol to evaluate the effects of a community-inspired awareness-raising and motivational enhancement strategy
  1. Alan R Clough1,
  2. Kristy Grant1,
  3. Jan Robertson2,
  4. Matthew Wrigley3,
  5. Nina Nichols4,
  6. Tracey Fitzgibbon5
  1. 1 Tropical Medicine and Rehabilitation Sciences, James Cook University, Cairns, Queensland, Australia
  2. 2 College of Healthcare Sciences, James Cook University, Cairns, Queensland, Australia
  3. 3 Aboriginal Resource Development Services (ARDS), Darwin, Australia
  4. 4 Apunipima Cape York Health Council, Bungalow, Queensland, Australia
  5. 5 Aboriginal Land Progress Association (ALPA), Darwin, Australia
  1. Correspondence to Professor Alan R Clough; alan.clough{at}jcu.edu.au

Abstract

Introduction Rates of secondhand smoke exposure are currently significantly higher among remote indigenous communities in the top end of Australia. By implementing a ‘smoke-free home’ rule, secondhand smoke exposure can be reduced. Smoke-free homes encourage quit attempts and improve the health of children. The prevalence of indigenous smoking rates in remote, discrete communities in Australia is elevated compared with their non-indigenous counterparts. The primary aim of this project is to examine the feasibility of conducting a health-driven intervention to encourage community members to make their homes a smoke-free zone.

Methods and analysis This study uses mixed-methods exploratory evaluation design to obtain data from key informants and community householders to assess their willingness to implement a ‘smoke-free’ rule in their homes. Initial focus groups will provide guidance on intervention content and deliver evaluation procedures and community requirements. A rapid survey will be conducted to ascertain interest from community members in having the project team visit to discuss study objectives further and to have a particle meter (with consent) placed in the house. Focus groups recordings will be transcribed and analysed thematically. Rapid surveys will be analysed using frequency distributions and tabulations of responses.

Ethics and dissemination The National Health and Medical Research Council guidelines on ethical research approaches to indigenous studies will be adhered to. The James Cook University Human Research Ethics Committee has provided ethics approval.

  • public health
  • tobacco
  • second-hand smoke exposure

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Strengths and limitations of this study

  • Strong coalition of community-based partners.

  • Communities have shown willingness to participate.

  • Due to limited resources, only a small number of communities can be included.

  • No control communities and no random selection of either communities or households.

Introduction

In the world’s indigenous populations, there are no published evaluations of interventions to reduce secondhand smoke exposure (SHSe) in indigenous homes. However, there is good evidence for the general population that, at every opportunity, SHSe should be minimised as it increases the risk of allergies, neural tube defects, sudden infant death syndrome and exacerbates asthma in children1–3 while also increasing the risks for lung cancer, ischaemic heart disease and respiratory disease in adults.3 4 An estimated 600 000 (around 1.0%) of deaths worldwide are attributed to SHSe, 28% of which are deaths in children.1 Moreover, there is good evidence that a smoke-free home: (1) reduces SHSe for resident non-smokers (particularly for children);5 (2) increases the number of quit attempts among active smokers in households5 6 and (3) deters resident adolescents from becoming established smokers.1 7 8 Studies in indigenous populations examining the use of incentives, competitions and sponsorship, combined with other strategies to reduce smoking, have been conducted with indigenous pregnant women, on worksites and among students.9–13 The potential advantages of using incentives specifically to encourage smoke-free homes have not been examined. Therefore, little is known about whether and what kind of incentives may be relevant and acceptable in indigenous populations. Finally, for the general population, several studies have measured SHSe and used the information to mobilise household-level change.14–20 However, no such studies in indigenous populations have been published.

This formative research of tobacco SHSe will be conducted in selected Aboriginal and Torres Strait Islander (indigenous) communities in Northern Australia. A coalition of community-based partners with a long history of engagement with their constituent communities in this region have designed an innovative suite of strategies. Community-wide awareness-raising programmes about the health risks of SHSe have been developed based on long-standing, cross-cultural ‘Discovery Education’ approaches, which is based on open communication with community members. ‘Discovery Education’ will impart information about the benefits of smoke-free homes in particular, and about managing smoke-free spaces generally, after its translation into locally accessible language and conceptual constructs. Measures of respirable particulate levels will be taken in households and the meaning and implications of these explained in terms of SHSe. At the same time, the partners propose to design and administer culturally relevant and acceptable incentives for householders to reinforce existing smoke-free home strategies. The evaluation of this initiative described in this protocol will take a collaborative approach and will rigorously assess the outcomes achieved and the processes used by this coalition of community service providers, indigenous community leaders and community advocates.

There is a high need for evidence regarding any interventions that could work because smoking rates are elevated in indigenous populations. In North America and Oceania, where indigenous peoples were colonised by peoples from Western Europe, consistent, contemporary disparities in smoking rates exist between the local indigenous populations and the general populations of countries in these regions and these run parallel to the known disparities in tobacco-related morbidity and mortality.21 22 In Native Americans, current daily smoking rates of 21.9% are 1.3 times higher than for other American.4 In Canada, smoking rates among Métis, First Nations and Inuit populations of 36.8%, 40.1% and 49%, respectively, are from 2.5 to 3.3 times higher than for other Canadians.23 24 Daily smoking rates among New Zealand Maori of 38.6%, are 2.4 times those for non-indigenous New Zealanders.25 Current daily smoking rates of 38.9% among Aboriginal and Torres Strait Islander (indigenous) Australians are three times higher than for non-indigenous Australians26 27 with tobacco use still the leading preventable cause of the disproportionately high chronic disease burden compared with other Australians.26 28 29

It is well documented in Australia that these disparities in smoking rates and disease burden widen with increased remoteness and isolation.26 30 Adding to the burden, overcrowding of housing increases with remoteness and isolation in the same manner as smoking rates.29 31 From 60% to 71% of all indigenous Australians live in households with daily smokers1 31 and overcrowding of houses in indigenous Australian communities reinforces high-smoking rates and increased SHSe.32 The potential impacts of SHSe are thereby compounded providing further justification for intervention strategies that are robust and community driven combined with rigorous evaluation studies that can clearly demonstrate effectiveness.

Our pilot data indicate that in response to this widespread tobacco use, remote community residents wish to reduce smoking in their homes to protect the health of their children and to support quit attempts by smokers in their families.6–8 33–35 In four participating remote indigenous communities in Northern Australia, this study will: (1) apply the ‘Discovery Education’ approach to awareness raising about the health risks of SHSe and examine its utility and transferability; (2) design locally relevant incentives to encourage the creation of smoke-free homes and assess the acceptability of the incentives; (3) measure SHSe in participants’ homes and investigate the use of these measures for mobilising change at the household level while, at the same time and (4) monitoring tobacco sales through local community stores. The protocol for this evaluation study is designed to support these community-inspired efforts, in order to refine the community partners intervention strategies, to consider their transferability and to test elements of a robust methodology to implement the intervention elsewhere and to evaluate its effectiveness with valid outcome measures in a larger trial.

Methods

Study setting: ‘very remote’ indigenous communities

The highest smoking rates known for indigenous Australians have been found in the ‘very remote’ communities where this study is located (see figure 1). Smoking rates of 61.7% of adults have been documented in far North Queensland30 and between 71% and 82% in the ‘Top End’ of the Northern Territory (NT),31 32 36 substantially higher than 38.9% for indigenous Australians overall.26 27 Remarkably, these rates have not changed since the 1980s when 76.5% of Aboriginal adults surveyed in this part of the NT were smokers.37 Data from national surveys consistently reflect this lack of change in smoking rates in remote localities across Australia,35 38–42 contrasting with a reduction in smoking rates in the past decade among indigenous Australians overall, from 51% to 44%.31

Figure 1

Map created with ESRI ArcGIS using ABS Data.73 Red, major cites; black, indigenous communities.

In official statistics in Australia, the category of ‘very remote’ indigenous communities like those in this study, typically describes very small clusters of people and dwellings.43 They range in size from isolated ‘outstations’ housing just a few families, to larger settlements established and maintained during the early 20th century as Christian missions or Government stations with today around 3500 people living in the largest of these.44 While English is widely spoken in most communities, local languages are also retained and used as the first language in many places. Their populations are among the more severely disadvantaged and vulnerable groups in Australia; physically and socially isolated from the mainstream economy, and bearing a disproportionate burden of preventable chronic conditions, especially those linked with substance misuse.45 46 The total ‘very remote’ indigenous Australian population is approximately 92 000, equivalent to 13.7% of Australia’s total indigenous population but constituting a very small proportion (0.4%) of all Australians.44

The people living in such remote localities, including those in this study, have done so for much of their lives. Unique traditional cultural practices are maintained with relationships between individuals tightly circumscribed, regulated by cultural rules and expectations across long-established family and clan groups.47 The available housing typically accommodates more people than its construction is designed to support in these communities42 and there are few opportunities locally for mainstream employment. Cultural and family obligations mean that all resources are shared48 particularly desirable ones like tobacco, along with the money to purchase it.49 Tobacco is routinely shared among users.50

Study partners

This partnership has evolved over two decades. Apunipima Cape York Health Council (Apunipima) is the largest community controlled health organisation in Queensland.51 It provides health services to the indigenous residents of Cape York communities using social and emotional well-being approaches.52 In the NT, the Aboriginal Resource and Development Services (ARDS) Aboriginal Corporation is a cross-cultural communication and media specialist organisation which delivers communication services designed to bridge the knowledge gap between mainstream services and community people. ARDS has particular cross-cultural and linguistic expertise in Arnhem Land Yolngu matha speaking populations in the NT’s ‘Top End’.53 The Arnhem Land Progress Association Aboriginal Corporation (ALPA) provides retail services in community stores in remote communities across both far North Queensland and in the NT, including in all four of the study communities. As part of their product lines, ALPA makes tobacco products available locally.54–56 Although tobacco products can be purchased in larger regional centres, residents in the study communities generally prefer to purchase tobacco at the local ALPA store.32

Participating study communities

Four communities have provided their formal permission to participate in the collaborative intervention effort and in this evaluation study. Three are in the ‘Top End’ of the NT while one is in far North Queensland (figure 1). Napranum is situated on the Western side of Cape York in far North Queensland near the mining town of Weipa and 625 km from Cairns, the main regional centre. At the 2016 census, Napranum, with the least crowded housing, was comprised 228 households for its 907 indigenous residents,57 around 4.0 persons per household. Minjilang, in Western Arnhem Land (NT), is located 235 km Northeast of Darwin, the NT’s capital city, and has a population of 221 indigenous people living in 40 households,57 5.5 per household. Ramingining and Gapuwiyak are both located in Northeast  Arnhem Land, 450 km and 550 km from Darwin, respectively. Gapuwiyak is home to 871 indigenous residents in 101 households or 8.6 persons per household. Ramingining is the most crowded of the study communities with 811 indigenous residents in 92 households or 8.8 persons per household.44

Across these communities, for historical and geographical reasons, although English is spoken in all localities, there is a gradient in the degree to which traditional languages and conceptual constructs are retained and used in routine daily communication. One or more of the dialects of Yolngu matha are used for day-to-day communication in Gapuwiyak and Ramingining. In Minjilang, day-to-day communication is either in the local Kriol or in Gunwingku, the major language group in Western Arnhem Land. In Napranum, Torres Strait Kriol is typically used.57 This diversity, among other factors, makes for cross-cultural challenges for developing educational and awareness-raising strategies that have meaning in terms of health behaviour for local community residents, particularly smoking. However, this diversity also provides the opportunity to examine the transferability of interventions across this cultural gradient.

Overview of evaluation approach

The study uses a mixed-methods exploratory evaluation design58 which is well suited for such community-focused interventions. These groups naturally form the evaluation advisory group for each community to be engaged and consulted throughout the project. First, the purposes of the project are discussed and explained in detail with this group and qualitative information from participant responses will provide guidance on intervention content and delivery, evaluation procedures and community requirements. Then, a rapid survey is to be conducted with as many heads of community households as possible to gauge their interest in having the project team visit their household to discuss the study objectives in more details (and in private). At each participating household, and where informed consent is provided, a first round of interviews with all senior household members will be conducted. In these interviews, the number of residents and resident smokers in age and gender groups will be documented and a household tobacco expenditure budget will be compiled. The nature and content of any existing household or individual strategies to control SHSe will be documented. The use of a particle metre to measure each household’s SHSe will be discussed and negotiated and particle measures taken where permission is granted. Permission for a follow-up assessment and further particle measurements will be discussed and follow-up assessments will be conducted with those who agree. During the study period, tobacco sales data from ALPA’s community store will be used to inform discussions about tobacco use and to monitor any abrupt changes which may occur in consumption or expenditure.

This study follows the National Health and Medical Research Council (NHMRC) guidelines on ethical research approaches to indigenous studies. The identified values that are integral to Aboriginal and Torres Strait Islander studies are spirit and integrity, reciprocity, equality, survival and protection and responsibility.59 These values are met with this project as it has been community inspired, includes an indigenous community advisory group and engages with communities in ways developed and managed by community members and their established service and advocacy groups.

The ‘Discovery Education’ approach underpins the intervention

The ‘Discovery Education’ model, the basis for the intervention, has been developed and used by ARDS over the past 30 years, but never systematically evaluated. ARDS contends that dialogue and understanding occur more rapidly and effectively in a people’s first language and when founded in the shared conceptual structures in communities.59 To create effective dialogue on topics such as smoke-free homes, the methodology follows these conceptual steps (though in practice they can occur in parallel):

  1. ‘Discovery Education’ commences by seeking to understand what people know of a topic and the questions they have about it. This enquiry identifies the differences between mainstream perspectives and those of community members.

  2. The concepts and words in the vernacular that people apply to the subject at hand are identified. This methodological step aims to identify generative vocabulary, that is, keywords that relate to the topic.

  3. Then, through further dialogue, new relevant knowledge is shared. ‘Discovery Education’ is a two-way process where both ARDS educators and indigenous community members learn about each other’s worldview. During this process, new generative terms are found and improved ways of explaining new topics are developed.

The ‘Discovery Education’ process allows people to progressively integrate new knowledge into their existing worldview and to make their own decisions about how they will respond. Indigenous Australians have long been the subject of politically motivated ‘interventions’60 61 and so welcome the two-way, democratic engagement between equals that is enshrined in the methodology.62

Participants, recruitment, data and analysis

‘Discovery Education’ groups

In each community, advised and guided by the research partners, and using existing networks and established relationships, ‘Discovery Education’ groups will be recruited comprised key community representatives. Purposive sampling will be combined with a snowball approach, where further recommendations for both participants to recruit and advice about recruitment processes will be sought. A sufficient number of focus group sessions will be conducted to represent the community’s clan structure.

Data

The discussion thread for the ‘Discovery Education’ groups will generate qualitative information:

  1. Shared information about why SHSe is a health issue and translation of the information into an appropriate form for local people.

  2. The utility of measurements of respirable particulate matter as an indicator of SHSe will be discussed while demonstrating the use of a particle measuring device (Dylos DC1700). The Dylos unit provides a cheap, real-time data source that can be used as a motivator to bring about change in smoking behaviours in homes19 particularly in homes where there are young children.16

  3. Community people’s awareness of health risks from SHSe and how they assess these.

  4. How this information can best be conveyed to householders in the community as a whole.

  5. Kinds of incentives that would encourage different groups in the community to implement SHSe strategies in their homes and how the incentives should be allocated. For example, our pilot data show that vouchers for purchases at the community store or to run household electricity consumption are welcomed. The ‘Discovery Education’ groups will assist in identifying culturally appropriate and effective rewards, along with the fairest way to distribute them.

Data analysis

‘Discovery Education’ group recordings will be transcribed and the text analysed thematically, moving from initial codes imposed by the discussion thread to descriptive and more analytic concepts.63 NVivo V.10 will aid data retrieval and management for two researchers coding independently.

Rapid survey

Information about awareness of health risks of SHSe and how people assess these compiled in the ‘Discovery Education’ groups will be combined with evidence in the literature and used to develop culturally relevant instruments for survey data collection. The ‘Discovery Education’ groups will guide this process. The survey will be administered by interviewers, in local language at the ALPA-run community store whereas many adult indigenous community residents as possible will be provided information about the proposed community-led strategy and asked to participate in the survey.

Data

For those who consent, the brief survey will include assessments of:

  • whether they are a smoker, any quit intentions or attempts in the past 12 months and whether they share their home with smokers;

  • any current knowledge or awareness of SHSe and its harms;

  • the location of the house they live in (lot number on the community services map) and whether they know of any household rules about smoking at that address;

  • their interest or willingness to participate in or support the community-led strategy. Heads of households will be asked to identify as such through the rapid survey. Each self-reported head of household will be invited to participate in a more comprehensive survey to be conducted at their house and in private. Heads of households will be confirmed in consultation with members of the ‘Discovery Education’ group before proceeding.

Data analysis

Survey responses will be analysed using frequency distributions and cross tabulations of responses by lot number, managed and calculated in spreadsheets.

Survey with heads of households

Baseline data

The project aims to capture a minimum set of baseline data in each participating household.

  • In consultation with the head of each household, demographic data, smoking status of residents and living conditions will be documented. A smoking grid, to record the smoking status of residents, for that day will be compiled using established methods.32 64

  • For objective assessments of SHSe, households will be asked permission to set up the particle monitor inside the house temporarily. Self-reported assessments of SHSe will be elicited from heads of households and immediate feedback of particle monitoring results will be provided.14 65

  • Where permission is granted, SHSe will be measured over a 48-hour period.58

  • Any smoke-free spaces or rules about where people can or cannot smoke that are already established for that household will be described.

  • How any smoke-free spaces and rules were originally established and how they are maintained will be documented.

  • Whether household members would like to establish or expand smoke-free spaces and rules and receive incentives to do so will be discussed and documented.

  • Weekly household expenditure on tobacco will be estimated.

Key outcome measure:  the number of houses with rules about smoking in any household space assessed at baseline and follow-up

A home is considered smoke-free when no smoking is allowed indoors at all.66 Our preliminary data (unpublished) indicate that community residents similarly speak of SHSe controls in terms of smoking ‘outside the house’ which typically means that smoking is permitted on covered verandas and porches. Given the crowded housing these places can accommodate many people, particularly during the tropical wet season,64 67 and many of these will be smokers. This potentially makes the delineation of a home as ‘smoke-free’ problematic and its enforcement very difficult. Additionally, our preliminary data indicate that smoke-free rules can be applied to separate rooms in a dwelling or ‘around sick people or children’, wherever they are located inside a house or on a veranda. Around one-third of household heads may have such rules in place, according to preliminary data for one study community. Their own interpretation may be that their houses are already ‘smoke-free’. Given these complexities, our operational definition of a ‘smoke-free home’ will be:

‘any home where there are any rules in place that are recognised by members of a household as constraining smoking in spaces indoors or on external verandas’.

In accordance with this definition, the status of ‘smoke-free homes’ known in the community will be validated with the ‘Discovery Education’ groups both at baseline and follow-up using group discussions and consensus classification approaches already used routinely and shown to be valid in these populations to estimate tobacco use prevalence.49 68 69 From 1 to 3 months after the baseline data collection, the objective assessments and the self-reported assessments will be repeated, following the steps specified above for the baseline data.

Aims

For a socially and environmentally significant change, more than 50% of the total number of participating houses in the community would come to have smoke-free rules firmly in place at follow-up. This study aimed to bring about:

  • an increase in the number of ‘smoke-free’ houses to greater than 50% of houses in the community

  • a decrease in the mean SHSe levels observed in participating houses

  • a decrease in household expenditure on tobacco which may also equate to a reduction in tobacco sales at the local community store.

Data analysis

At baseline, survey responses will be analysed using frequency distributions and cross tabulations of responses by lot number, calculated in spreadsheets. Descriptive statistics and graphical methods will be deployed as appropriate to the survey measures developed. Mainly categorical measures are anticipated, so χ2 tests and regression modelling will be used. Comparisons between baseline and follow-up will use McNemar’s χ2 or Wilcoxon matched-pairs signed-rank tests for binary or categorical data, respectively. Paired t-tests will be used to compare baseline particulate matter and household tobacco expenditure with follow-up measurements. Weekly tobacco sales using data provided by ALPA will be used to provide an estimate per household expenditure and analysed using time series graphs of total weekly tobacco sales. These estimates will be compared with householder estimates. Quantitative data will be analysed using Stata V.14.

Feedback of study results and consideration of feasibility thresholds

In a final visit to each study community, ‘Discovery Education’ focus groups and advisory group members in the study advisory group will be reconvened to provide the study’s results to clan leaders. Householders’ self-assessments of SHSe at both baseline and follow-up that agree with objective SHSe measures would provide confidence in the qualitative information. A sound intervention study would enrol at least 80% of the houses in participating communities in a trial. A socially significant effect of the intervention would see an increase to at least 50% of households in participating study communities achieving validated ‘smoke-free’ status between baseline and follow-up. If this study can demonstrate a substantial proportion of households surveyed participating in the intervention and either succeeding or attempting to make changes, the case for expanding the trial would be compelling. Clan leaders will provide direction.

Timeline

The timeline for the study is as indicated in table 1.

Table 1

Study timeline showing activities completed at time of writing

Discussion

This project will reinforce the known capacity in remote indigenous Australian communities to manage environmental tobacco smoke67 and will encourage an increase in the number of household making concerted efforts to reduce SHSe in the study communities. Effective interventions to reduce SHSe in remote indigenous communities hold the prospect of reducing an array of significant smoking-related health issues. Such interventions for indigenous Australian populations have been advocated in the literature,6 8 64 67 but none have been implemented or rigorously evaluated.

In a recent review of all the major community-level substance misuse intervention trials funded by Australia’s NHMRC and conducted over the past decade in remote indigenous Australian communities, including five targeting tobacco, no clear effect in reducing smoking in these populations was found that could be attributed to any of the researcher-designed and evidence-based interventions.2 Low fidelity of intervention implementation, weak study designs, inadequate sample sizes and no explicit programme theory for intervention implementation and uptake were principal limitations described.2 Contrasting with these generally unsuccessful intervention designs, unique data from one NT study describe specific individual efforts by community residents to control SHSe in their dwellings.70 Pragmatic approaches which support such genuine community efforts are needed in these extreme circumstances of remoteness and crowded living circumstances where some of the highest smoking rates are known. There is a strong prospect that the efforts of community residents can be significantly strengthened as key indigenous stakeholders and community leaders in these regions also see smoke-free policies as a significant opportunity to reduce tobacco-related harms in their communities.2

The ongoing strong community advocacy and support of the long-standing indigenous organisations leading this intervention (ALPA and ARDS) will carry on into the future representing an important opportunity to reduce SHSe and improve health outcomes in these remote communities. This meets the need for ‘indigenous leadership, partnership and engagement and cultural tailoring’ which has been strongly advocated in recent literature on the subject.71 With half or more of the people being daily smokers amidst the crowded living conditions found in these communities,30 improvements to health experienced by other Australians as smoking rates fall have not been available in these marginalised populations. Future larger-scale interventions and more rigorous evaluations of their effectiveness will be possible if the intervention and evaluation approach being assessed here proves feasible with:

  • robust self-reported and objective outcome measures

  • evidence for strong implementation fidelity

  • convincing potential for the community organisations initiating the intervention to sustain it with the transfer of positive intervention components becoming enabled.

Limitations

Notwithstanding the above-mentioned strengths of this study, several limitations must be acknowledged. Only a small number of communities could be included because of limited resources; the sample is as large as these resources have permitted. Additionally, it is an unavoidable weakness that there are no control communities included and no random selection of either communities or households. Random selection for such a pragmatic study is fraught with ethical difficulties in communities where the desire for assistance to make positive change is strong. The lack of randomisation cannot, however, be sustained as a criticism since the study communities were self-selecting, primarily because of the nature of the coalition between the study partners with a mandate to address the issue in the study communities. To keep faith with NHMRC guidelines which require maximum input from indigenous communities and agencies into research initiation and involvement in design and implementation, the study approach described here is arguably the only way such research can be conducted.

Dissemination

Strategies for disseminating study results will use the traditional means of scientific publications and professional conferences with a focus on reducing tobacco’s harms. In addition, a targeted dissemination strategy will be used where messages will be tailored for specific audiences living and working within the study regions as designed for previous projects in this topic and setting.70 In-person presentations of results to the study advisory group in workshops is a feature of this approach. These will be facilitated by ARDS collaborators in the ‘Discovery Education’ cycle. For those with a mandate for policies in this topic area, 500-word policy briefs have been useful.70

Key practitioners in the study communities are indigenous Health Workers, resident Nurses and visiting Medical Officers.70 Although highlighting the need for clinical staff to support community-level initiatives, the heavy acute care and chronic disease treatment workload has made this very difficult for clinicians.72 Recognising this challenge, the study will develop from the evidence compiled a ‘Smoke-free Space Practitioners Guide’ aiming to foster smoke-free homes in other Aboriginal communities. As cross-cultural communication specialists, ARDS, ALPA and Apunipima can disseminate it through their established networks.

Conclusions

Very high and unchanging rates of smoking in populations where overcrowding in housing is extreme, but where there is documented potential6–8 33–35 for appropriately designed and supported intervention strategies to be taken up by local indigenous community residents and advocated by their leaders, suggests that efforts to reduce SHSe will be welcomed and have high likelihood of success in these settings.

Acknowledgments

The authors would like to thank the indigenous communities involved in the study and the study partners: Aboriginal Resource and Development Services (ARDS) Aboriginal Corporation, The Arnhem Land Progress Association, Apunipima Cape York Health Council, the Napranum Council and the Queensland and Northern Territory Heart Foundations. For reviewing the manuscript and contributing the map (figure 1), thanks to Mr Chris Rouen, Australian Institute of Tropical Medicine, James Cook University, Cairns.

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View Abstract

Footnotes

  • Contributors ARC led in designing this study, involved in data collection, data analyses, drafting and approval of this manuscript. He designed the project and sought funding. KG involved with the Van Guard Grant since its approval and assisted with design, data collection, data analyses, drafting and approval of this study. JR involved with the Top-End smoke-free spaces project since 2012 and assisted in design, data collection, data analyses, drafting and approval of this study. MW is a consult for ARDS and is the organisational representative. MW involved in the design of the Arnhem Land project, and assisted in transferring the design of the study to the current location. MW also assisted in data collection, data analyses, drafting and approval of this study. NN is the organisational representative for Apunipima. NN was present during discussions for design and implementation of the study and assisted with data collection, data analyses, drafting and approval of this study. TF is the organisational representative for ALPA and assisted in data collection, data analyses, drafting and approval of this paper.

  • Funding This project is funded by the National Heart Foundation of Australia. Grant number 1014773.

  • Competing interests Although ALPA provides tobacco products for sale in the communities it supports these preventive efforts. Author TF is an ALPA employee who coordinate sales records including tobacco sales. TF will provide the tobacco sales data described in the Methods section.

  • Patient consent Obtained.

  • Ethics approval James Cook University Human Research Ethics Committee.

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

  • Data sharing statement No additional unpublished data from this study protocol are available.

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