"Need Everyone Helping to Keep Off Because Everyone Helping to Keep On" - Reducing Harms from Cannabis use in Remote Indigenous Australian Communities Involves More Than Just Users.

BACKGROUND: Heavy cannabis use in remote Indigenous Australian communities potentially contributes to existing health disparities. Community members' perceptions of cannabis harms will support harm-minimization in these settings. OBJECTIVE: To describe perceived cannabis harms reported by a cohort of Indigenous Australians living in small, isolated communities as an indication of their existing resources for change. METHOD: Inductive thematic analysis of 407 semi-structured interviews with participants in a cohort study in three remote communities in Cape York in far north Queensland (Australia) revealed major areas of concern about cannabis. Three attitudinal categories were defined according to reported cannabis impacts and urgency for change: 1- "LOW CONCERN" said cannabis was a low priority community issue; 2- "SOME CONCERN" tolerated cannabis use but identified personal or community-level concerns; and 3- "HIGH CONCERN" expressed strong aversion to cannabis and identified serious personal or community-level harms. The characteristics and the patterns of concerns were summarized across the groups. RESULTS: "Category 1- LOW CONCERN" (n = 107), mostly current users, emphasized personal "financial impacts" and "stress." "Category 2 - SOME CONCERN" (n = 141) perceived community level impacts warranting systematic action, particularly on "employment"; and "Category 3 - HIGH CONCERN" (n = 159), most of the never users, emphasized concerns for families and youth. Irrespective of use history, the cohort reported financial and abstinence-related stress, overlapping alcohol issues and generally endorsed alleviating impacts on children and youth. CONCLUSION: Nearly ubiquitous experience with cannabis harms and impacts in this cohort suggests resources for harm reduction including family and cultural obligation, stress relief, financial management, and engagement are available across all community members, not just users.

Cannabis Use Among Remote Indigenous Australians: Opportunities to Support Change Identified in Two Waves of Sampling.

Background: Cannabis harms among Indigenous populations in Australia, New Zealand, Canada and the United States may be magnified by poorer health and heavy use. However, little direct evidence is available to evaluate cannabis' impacts. In communities in remote northern Queensland (Australia) where cannabis has become endemic, opportunities to support change were investigated. Methods: Opportunistically recruited participants (aged 15-49 years) discussed their cannabis use history in interviews in two waves of population sampling in Cape York (Queensland). Wave 1 included 429 people (235 males and 194 females); and wave 2 included 402 people (228 males and 174 females). Current users (used cannabis during the year before interview) described frequency of use, amount consumed, expenditure and dependence symptoms. Other substance use was recorded for 402 people at wave 2. Results: Wave 1: 69% reported lifetime use and 44% current use. Males (55%) were more likely than females (30%) to be current users (P < 0.001). Most (96%) current users described at least weekly use; nearly half (48%) were "heavy" users (≥6 cones/session at least once/week) and 77% met cannabis dependence criteria. Three communities spent up to $AUD14,200/week on cannabis, around $AUD2.0 million/year, or around 9% of community people's total income on cannabis. The majority (79%) of current users wanted to quit or reduce their cannabis use. Wave 2: no difference was observed in the proportion of lifetime (69%, |z| = 0.04, P = 0.968) or current cannabis users (39%, |z| = 1.39, P = 0.164); nor current use among males (71%, |z| = 0.91, P = 0.363) or females (62%, |z| = 0.36, P = 0.719). However, a significant reduction in current users by 15% (|z| = 2.36, P = 0.018) was observed in one community. Of 105 wave 1 current users re-assessed in 2, 29 (27%) had ceased use. These participants reported cost and family commitments as reasons to change and that social support and employment enabled abstinence. Current and lifetime cannabis use were closely associated with all other substance use, particularly tobacco and alcohol (both P > 0.001). Conclusions: High rates of heavy cannabis use in remote Australian Indigenous communities warrant action. Successful cessation among some individuals suggests that significant opportunities are available to support change even where cannabis use may be endemic.

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.