Smoking, nutrition, alcohol and physical activity interventions targeting Indigenous Australians: rigorous evaluations and new directions needed

Objective: To describe and critique methodological aspects of interventions targeting reductions in smoking, poor nutrition, alcohol misuse and physical inactivity (SNAP risk factors) among Indigenous Australians. Methods: An electronic search of eight databases and a manual search of reference lists of literature reviews and reference libraries for Indigenous‐specific intervention studies published in peer‐reviewed journals (January 1990 to August 2007) were undertaken. Alcohol, smoking, nutrition or physical activity needed to be the primary focus of the study and the intervention needed to specifically target Indigenous Australians. Results: Twenty studies were selected for inclusion in the review. Methodologically, few studies employed randomisation or a control group, most omitted important details (e.g. costs), some did not report process measures (e.g. attrition rates), and some did not use validated measures. Two‐thirds of interventions were implemented at the community level and employed multiple strategies. Conclusion: There is a need for more rigorous evaluations of interventions targeting reductions in SNAP risk factors among Indigenous Australians, and to establish the reliability and validity of measures to quantify their effect. Implications: It may be beneficial for future Indigenous‐specific intervention research to focus on the evaluation of secondary prevention to complement the current concentration of effort targeting primary prevention. Community‐wide interventions, combining strategies of greater intensity for high risk individuals with those of less intensity targeting lower risk individuals, might also offer considerable promise.     

Health Promotion and the Preventative Health Taskforce

The release in October of the Preventative Health Taskforce's discussion paper, ‘Australia: the healthiest country by 2020’ offers health promotion practitioners their greatest opportunity to participate in national policy development for many years. The Taskforce, which was established by the Federal Health Minister Nicola Roxon in March, has been asked to develop a National Preventative Health Strategy for the Government by mid‐2009, focusing initially on obesity, smoking and alcohol. The Taskforce has proposed the following targets to be achieved by 2020:

• halt and reverse the rise in overweight and obesity;
• reduce the prevalence of daily smoking to 9% or less;
• reduce the prevalence of harmful drinking for all Australians by 30%; and
• contribute to the ‘Close the Gap’ target for Indigenous people, reducing the 17‐year life expectancy gap between Indigenous and non‐Indigenous Australians.

     

Epidemiology of alcohol‐related burden of disease among Indigenous Australians

Objective: To compare the burden of alcohol‐related harm and underlying factors of this harm, by age and sex, for Indigenous and general population Australians. Methods: Population attributable fractions are used to estimate the disability adjusted life years (DALYs) for alcohol‐related disease and injury. The DALYs were converted to rates per 1,000 by age and sex for the Indigenous and general populations. Results: Homicide and violence rates were much higher for Indigenous males: greatest population difference was for 30–44 years, Indigenous rate 8.9 times higher. Rates of suicide were also greater: the largest population difference was for 15–29 years, Indigenous rate 3.9 times higher. Similarly, for Indigenous females, homicide and violence rates were much higher: greatest population difference was for 30–44 years, Indigenous rate 18.1 times higher. Rates of suicide were also greater: the largest population difference was for 15–29 years, Indigenous rate 5.0 times higher. Conclusions: Alcohol consumption and associated harms are of great concern for Indigenous Australians across all ages. Violent alcohol‐related harms have been highlighted as a major concern. Implications: To reduce the disproportionate burden of alcohol‐related harm experienced by Indigenous Australians, targeted interventions should include the impact on families and communities and not just the individual.     

Estimating cancer incidence in Indigenous Australians

Objective: To assess data quality of cancer registrations for Indigenous Australians and produce reliable national Indigenous cancer incidence statistics. Methods: Completeness of Indigenous identification was assessed for the eight Australian cancer registries using an innovative indirect assessment method based on registry‐specific registration rates for smoking‐related cancers. National age‐standardised incidence rates and rate ratios (Indigenous:non‐Indigenous) were calculated for all cancers combined and 26 individual cancer sites. Multivariate regression analysis was used to investigate trends in Indigenous cancer incidence by time or remoteness of residence, and whether the incidence rate ratio (Indigenous:non‐Indigenous) was different in younger than older age‐groups. Results: Four registries covering 84% of the Indigenous population had sufficiently complete Indigenous identification to be included in analysis. Compared to other Australians, Indigenous Australians had much higher incidence of lung and other smoking‐related cancers, cervix, uterus and liver cancer, but much lower incidence of breast, prostate, testis, colorectal and brain cancer, melanoma of skin, lymphoma and leukaemia. Incidence was higher in remote areas for some cancers (including several smoking‐related cancers) but lower for others. The incidence rate ratios (IRRs) for smoking‐related cancers were higher in younger than older people. Conclusions: Indigenous Australians have a different pattern of incidence of specific cancers than other Australians and large geographical variations for several cancers. Implications: All cancer registries need to further improve Indigenous identification, but national Indigenous cancer incidence statistics can, and should, be regularly reported. Tobacco control is a critical cancer‐control issue for Indigenous Australians.     

Substance misuse intervention research in remote Indigenous Australian communities since the NHMRC ‘Roadmap’

Objective : Describe program theories of substance misuse interventions with Aboriginal and Torres Strait Islander (Indigenous) Australians funded by the National Health and Medical Research Council (NHMRC) since the ‘Roadmap’ for Indigenous health. Methods : Projects funded 2003–2013 were categorised by intervention strategies. Realist concepts informed the program theory: intended resources and responses; influence of context on outcomes; explicit and implicit program assumptions. Results : Seven interventions were included. Three randomised controlled trials targeted tobacco using psychosocial interventions in primary health centres using the program theory: “Local Indigenous health workers extend and sustain the effects of conventional clinical brief intervention by engendering social and cultural resources”. Four pragmatic trials of multiple‐component, community‐based interventions using controlled, semi‐controlled or before‐and‐after designs used the program theory: “Discrete intervention components targeting locally defined substance misuse issues will activate latent capacities to create an environment that favours cessation.” Publications did not report clear effect, implementation fidelity or explicit mechanisms affecting participant thinking. Conclusions : Rigorous intervention designs built on ‘Roadmap’ principles neither reduced substance use in the populations studied nor identified transferable mechanisms for behaviour change. Implications for public health : Substance misuse impacts among Indigenous Australians remain severe. Theoretical mechanisms of behaviour change may improve intervention design.     

Delivering culturally appropriate residential rehabilitation for urban Indigenous Australians: a review of the challenges and opportunities

Objective: To review the challenges facing Indigenous and mainstream services in delivering residential rehabilitation services to Indigenous Australians, and explore opportunities to enhance outcomes. Methods: A literature review was conducted using keyword searches of databases, on‐line journals, articles, national papers, conference proceedings and reports from different organisations, with snowball follow‐up of relevant citations. Each article was assessed for quality using recognised criteria. Results: Despite debate about the effectiveness of mainstream residential alcohol rehabilitation treatment, most Indigenous Australians with harmful alcohol consumption who seek help have a strong preference for residential treatment. While there is a significant gap in the cultural appropriateness of mainstream services for Indigenous clients, Indigenous‐controlled residential organisations also face issues in service delivery. Limitations and inherent difficulties in rigorous evaluation processes further plague both areas of service provision. Conclusion: With inadequate evidence surrounding what constitutes ‘best practice’ for Indigenous clients in residential settings, more research is needed to investigate, evaluate and contribute to the further development of culturally appropriate models of best practice. In urban settings, a key area for innovation involves improving the capacity and quality of service delivery through effective inter‐agency partnerships between Indigenous and mainstream service providers.     

Self-rated health status in an urban indigenous primary care setting: implications for clinicians and public health policy

Background: Self‐rated health status provides insights into the health beliefs of a population. This will be important for framing public health messages in the context of the need to ‘close the gap’ for Australian Indigenous people. Our primary objectives were to describe the self‐rated health status of Indigenous people attending the Inala Indigenous Health service, identify associations with positive and negative self‐rated health status and identify targets for public health awareness raising activity. Methods: Using a convenience sample, we approached all Indigenous patients attending the Inala Indigenous Health Service for an Indigenous adult health check between June 2007 and July 2008. From Indigenous adult health check data we analysed self‐rated health status and chronic disease risk factors. Results: Out of a possible 509, 413 patients were recruited (response rate 81%). The number of participants who rated their health as fair or poor was 47%. The association of greatest magnitude and statistical significance with Indigenous patients’ self rated health status (negative versus positive) was waist circumference followed by smoking, depression and age. Chronic disease risk factors not associated with self‐rated health status included systolic blood pressure, harmful alcohol use, marijuana use, presence of diabetes and lack of exercise. Conclusions: High rates of negative self‐rated health status were found. Public health awareness‐raising for Indigenous audiences should consider targeting chronic disease risk factors such as systolic blood pressure, harmful alcohol use, marijuana use, presence of diabetes and lack of exercise.     

Indigenous Australians are under-represented in longitudinal ageing studies

Objective: Evidence‐based policy depends on the availability of high‐quality research that is relevant to the population. This study aimed to identify the available data on the health of older Indigenous Australians in population‐based longitudinal studies of ageing. Approach: Evaluation of the Dynamic Analyses to Optimise Ageing Project (DYNOPTA) dataset that has pooled nine Australian longitudinal ageing studies, six of which were analysed here. Main outcome measures: Proportions of the DYNOPTA sample identified as Indigenous. Results: Indigenous participants made up 0.7% of males and 0.5% of females in the weighted sample, compared with 0.8% of both sexes in the Australian population. Indigenous under‐representation is greater at ages 45–54 than at older ages, despite overall greater participation in this age range. Conclusions and implications: Within the existing Australian longitudinal ageing studies, Indigenous Australians are under‐represented. This means there is a significant gap in the evidence base relating to the health of older Indigenous Australians. Research approaches specifically designed to address the health and wellbeing of older Indigenous Australians are urgently required.     

Systematic review to inform prevention and management of chronic disease for Indigenous Australians: overview and priorities

Objective: To describe the main characteristics of systematic reviews addressing questions of chronic disease and related risk factors for Indigenous Australians. Methods: We searched databases for systematic reviews meeting inclusion criteria. Two reviewers assessed quality and extracted characteristics using pre‐defined tools. Results: We identified 14 systematic reviews. Seven synthesised evidence about health intervention effectiveness; four addressed chronic disease or risk factor prevalence; and six conducted critical appraisal as per current best practice. Only three reported steps to align the review with standards for ethical research with Indigenous Australians and/or capture Indigenous‐specific knowledge. Most called for more high‐quality research. Conclusion: Systematic review is an under‐utilised method for gathering evidence to inform chronic disease prevention and management for Indigenous Australians. Relevance of future systematic reviews could be improved by: 1) aligning questions with community priorities as well as decision maker needs; 2) involvement of, and leadership by, Indigenous researchers with relevant cultural and contextual knowledge; iii) use of critical appraisal tools that include traditional risk of bias assessment criteria and criteria that reflect Indigenous standards of appropriate research. Implications: Systematic review method guidance, tools and reporting standards are required to ensure alignment with ethical obligations and promote rigor and relevance.     

Stressful life events, resources, and access: key considerations in quitting smoking at an Aboriginal Medical Service

OBJECTIVE: Aboriginal and Torres Strait Islander people experience adverse health outcomes and have high rates of smoking and related illnesses. This brief report describes stress as a barrier to quitting smoking derived from reflections within an Aboriginal Medical Service and makes recommendations for intervention development. METHODS: A high-intensity smoking cessation program was conducted within a suburban Aboriginal Medical Service in Western Sydney, Australia, over a 10-month period. The intervention included weekly cessation counselling sessions and dispensation of free nicotine replacement therapy (NRT). RESULTS: During the observation period, 32 clients made quit attempts. To date, three clients (9%) have quit smoking. Chronic and intercurrent life stressors were noted to be the main barriers to smoking cessation described by participants. CONCLUSIONS: Achieving smoking cessation among Indigenous people is made significantly more complex because of multiple life stressors experienced. IMPLICATIONS: Future interventions targeting Indigenous Australians should take greater account of stressful life events and their impact on quitting smoking.     

The oral health status and treatment needs of Indigenous adults in the Kimberley region of Western Australia

Objective: The oral health of Indigenous Australians, whether urban or rural, is significantly poorer than their non‐Indigenous counterparts, and it would be expected that the oral health of rural and remote Indigenous Australians would be particularly poor, although the extent of this extra disadvantage has not been thoroughly documented. The aim of this study was to assess the oral health status and oral health needs in a sample of adult residents of selected towns and remote communities in the Kimberley region of North‐west Australia. Design: A cross‐sectional survey (dental examinations and oral health questionnaires) was carried out. Setting: Rural and remote communities in the Kimberley region of Western Australia. Participants: Adults in four selected communities. Results: The mean Decayed, Missing and Filled Teeth (DMFT) score for all participants was 9.8 (SD 8.3). The mean DMFT increased with increasing age. Only 7.3% of people were caries‐free. A total of 13% of participants had periodontal pockets of 6 mm or more, and only 3% had no periodontal disease. More than a third (37%) of all participants had advanced periodontal disease. Only 21% of participants did not need any dental treatment. Conclusions: The oral health of Aboriginal and Torres Strait Islander people are listed as one of the priority areas of Australia's National Oral Health Plan. Based on the above results, oral health is clearly an important priority in the Kimberley.     

A review of tobacco interventions for Indigenous Australians

OBJECTIVE: To conduct a review of interventions to reduce the harm resulting from tobacco use among Indigenous Australians and to discuss the likely effect of a range of tobacco interventions if conducted in this population. METHODS: A systematic review of medical literature and an audit of information from 32 government departments, non-government organisations and indigenous health organisations, which was completed in March 2001. RESULTS: A number of small tobacco programs had been conducted. Only four tobacco interventions had been evaluated in indigenous communities: a trial of training health professionals in conducting a brief intervention for smoking cessation; a trial of a CD-ROM on tobacco for use with indigenous schoolchildren; a qualitative evaluation of the effect of a mainstream advertising campaign on Indigenous people; and a pilot study of smoke-free workplaces, evaluated by qualitative methods. None of these studies assessed smoking cessation as an outcome. Two of these studies were unable to conclusively show any effect of the interventions; training health professionals in delivering a brief intervention resulted in some changes to practice and the evaluation of the mainstream advertising campaign showed that following the campaign, knowledge about tobacco had increased. CONCLUSIONS: There was a major lack of research on and evaluation of tobacco interventions for Indigenous Australians. IMPLICATIONS: More research and evaluation is required to ensure that tobacco interventions are appropriate and effective for Indigenous people. It is time to cease chronicling the ill health of Indigenous Australians and time to ensure the availability of well-evaluated, effective tobacco programs.     

An evaluation of tobacco brief intervention training in three indigenous health care settings in north Queensland

OBJECTIVE: To evaluate the pilot phase of a tobacco brief intervention program in three Indigenous health care settings in rural and remote north Queensland. METHODS: A combination of in-depth interviews with health staff and managers and focus groups with health staff and consumers. RESULTS: The tobacco brief intervention initiative resulted in changes in clinical practice among health care workers in all three sites. Although health workers had reported routinely raising the issue of smoking in a variety of settings prior to the intervention, the training provided them with an additional opportunity to become more aware of new approaches to smoking cessation. Indigenous health workers in particular reported that their own attempts to give up smoking following the training had given them confidence and empathy in offering smoking cessation advice. However, the study found no evidence that anybody had actually given up smoking at six months following the intervention. Integration of brief intervention into routine clinical practice was constrained by organisational, interpersonal and other factors in the broader socioenvironmental context. CONCLUSIONS/IMPLICATIONS: While modest health gains may be possible through brief intervention, the potential effectiveness in Indigenous settings will be limited in the absence of broader strategies aimed at tackling community-identified health priorities such as alcohol misuse, violence, employment and education. Tobacco and other forms of lifestyle brief intervention need to be part of multi-level health strategies. Training in tobacco brief intervention should address both the Indigenous context and the needs of Indigenous health care workers.     

A bibliometric analysis of research on Indigenous health in Australia, 1972-2008

Objective: To determine the growth patterns and citation volume of research publications referring to Indigenous health in Australia from 1972 to 2008 compared to seven selected health fields. Methods: Web of Science was used to identify all publications (n=820) referring to the health of Indigenous Australians authored by Australian researchers, 1972 to 2008. Citations for each publication were also captured. Growth was compared with selected health fields as well as with overall Australian research publications. Results: Research publications referring to Indigenous health, while remaining relatively small in number, grew at an average annual rate of 14.1%, compared with 8.2% across all fields of Australian research. The growth rate shown was equal second highest in our seven categories of health and medical research. However, Indigenous publications were cited significantly less than the Australian average. Conclusions: While there has been positive growth in publications referring to Indigenous health, the attention paid to this research through citations remains disappointingly low. Implications: Given that research concentration and impact can be an index of how seriously a nation considers a health problem, the low visibility of Australian research examining Indigenous health does not demonstrate a level of concern commensurate with the gravity of Indigenous health problems. Further investigation for the reasons for lower citations may identify potential intervention strategies.     

Managing alcohol‐related problems among Indigenous Australians: what the literature tells us

Objective: To contextualise and provide an overview of two review papers – prepared as part of a larger research program – dealing with different aspects of the treatment of Indigenous Australians with alcohol‐related problems. Method: The papers were reviewed thematically and compared to identify key issues raised in them. Findings: Together, the papers highlight the paucity of the evidence base for the provision of treatment for Indigenous Australians with alcohol‐related problems. Among the key issues identified are: the need to engage with clients in culturally safe ways; practitioner, organisational and client barriers to engagement; the contexts in which Indigenous drinking and treatment take place; the need to develop rigorous methods of evaluation more appropriate to Indigenous cultural and service provision settings; and the importance of effective partnerships in the provision of services. Conclusion: For those working in the field, the reviews direct attention to the need to review and interrogate our current practice. They also provide clear directions for future research.     

Potential effectiveness of specific anti-smoking mass media advertisements among Australian Indigenous smokers

Aboriginal and Torres Strait Islander Australians (Indigenous Australians) have more than twice the smoking prevalence of non-Indigenous Australians. Anti-smoking campaigns have demonstrated success in the general population but little is known about their impact among Indigenous people. A total of 143 Indigenous and a comparison group of 156 non-Indigenous smokers from South Australia were shown 10 anti-smoking advertisements representing a range of advertisements typically aired in Australia. Participants rated advertisements on a five-point Likert scale assessing factors including message acceptance and personalized effectiveness. On average, Indigenous people rated the mainstream advertisements higher than non-Indigenous people and were more likely to report that they provided new information. Advertisements with strong graphic imagery depicting the health effects of smoking were rated highest by Indigenous smokers. Advertisements featuring real people describing the serious health consequences of smoking received mixed responses. Those featuring an ill person were rated higher by Indigenous people than those featuring the family of the person affected by a smoking-related disease. With limited Indigenous-specific messages available and given the finite resources of most public health campaigns, exposure to mainstream strong graphic and emotive first-person narratives about the health effects of smoking are likely to be highly motivating for Indigenous smokers.     

A systematic review of adherence in Indigenous Australians: an opportunity to improve chronic condition management

Background

Indigenous Australians experience high rates of chronic conditions. It is often asserted Indigenous Australians have low adherence to medication; however there has not been a comprehensive examination of the evidence. This systematic literature review presents data from studies of Indigenous Australians on adherence rates and identifies supporting factors and impediments from the perspective of health professionals and patients.

Methods

Search strategies were used to identify literature in electronic databases and websites. The following databases were searched: Scopus, Medline, CINAHL Plus, PsycINFO, Academic Search Premier, Cochrane Library, Trove, Indigenous Health infonet and Grey Lit.org. Articles in English, reporting original data on adherence to long-term, self-administered medicines in Australia’s Indigenous populations were included.Data were extracted into a standard template and a quality assessment was undertaken.

Results

Forty-seven articles met inclusion criteria. Varied study methodologies prevented the use of meta-analysis. Key findings: health professionals believe adherence is a significant problem for Indigenous Australians; however, adherence rates are rarely measured. Health professionals and patients often reported the same barriers and facilitators, providing a framework for improvement.

Conclusions

There is no evidence that medication adherence amongst Indigenous Australians is lower than for the general population. Nevertheless, the heavy burden of morbidity and mortality faced by Indigenous Australians with chronic conditions could be alleviated by enhancing medication adherence. Some evidence supports strategies to improve adherence, including the use of dose administration aids. This evidence should be used by clinicians when prescribing, and to implement and evaluate programs using standard measures to quantify adherence, to drive improvement in health outcomes.