Cohort Profile: The Melbourne Injecting Drug User Cohort Study (SuperMIX)

Abstract

SuperMIX is Australia's largest and only active longitudinal cohort of PWID.• The cohort aims to describe the natural history and longitudinal trajectories of injecting drug use, including risk and protective factors of adverse health outcomes, cessation of and relapse into injecting drug use, and the impacts of health service access.• Data collection involves baseline and annual follow-up interviews and venous blood samples with linked health service data. During interviews a questionnaire that records demographics, drug purchase and use, health service utilisation, criminal behaviour and criminal justice system interactions is administered.

Does sexuality matter? A cross-sectional study of drug use, social injecting, and access to injection-specific care among men who inject drugs in Melbourne, Australia

“…SuperMIX is a longitudinal cohort study established in 2008 to identify trajectories of injecting drug use among people who inject drugs in Melbourne, Australia. Recruitment and data collection procedures have been described in detail previously [ 36 , 37 ]. Briefly, participants were recruited in and around known drug markets in metropolitan Melbourne, Australia, through a combination of respondent-driven sampling, snowball sampling and street outreach methods.…”

“…We describe the following socio-demographic characteristics by GBMSM status: age at interview (years, continuous); country of birth (Australia, other); identification as either Aboriginal, Torres Strait Islander, or both (yes, no); educational attainment (< year 10, year 10–12, tertiary/diploma/trade, other); average weekly income (< $400, $400–$999, ≥ $1000); primary income source (wage or salary, government support, other); living circumstances (alone, with others) and housing stability (stable, unstable/homeless). Unstable housing was defined as living in a boarding house/hostel, shelter/refuge or caravan park, ‘couch surfing’ or ‘sleeping rough’ [ 37 , 38 ].…”

Health service utilisation and access for people who inject drugs during COVID‐19

“…The study was established in 2008 and examines the drug use, social and health trajectories of people who inject drugs. Participants of the study complete a survey every 12 months [ 19 ].…”

Does sexuality matter? A cross-sectional study of drug use, social injecting, and access to injection-specific care among men who inject drugs in Melbourne, Australia

“…SuperMIX is a longitudinal cohort study established in 2008 to identify trajectories of injecting drug use among people who inject drugs in Melbourne, Australia. Recruitment and data collection procedures have been described in detail previously (36,37). Brie y, participants were recruited in and around known drug markets in metropolitan Melbourne, Australia.…”

“…We describe the following sociodemographic characteristics by GBMSM status: age at interview (years, continuous); country of birth (Australia, other); identi cation as either Aboriginal, Torres Strait Islander, or both (yes, no); average weekly income (<$400, $400-$999, ≥$1000); primary income source (wage or salary, government support, other); living circumstances (alone, with others) and housing stability (stable, unstable/homeless). Unstable housing was de ned as living in a boarding house/hostel, shelter/refuge or caravan park, 'couch sur ng' or 'sleeping rough' (37,38).…”