Survey
Outcomes were assessed at baseline, as well as follow-up (3 months post-intervention). At baseline, a range of sociodemographic variables were collected. These covariates included age, gender, occupation, Indigenous status, country of birth and previous MATES training. Age was classified in 10-year age groups. Occupation was coded to the two-digit level as per Australian and New Zealand Standard Classification of Occupations (ANZSCO). This was then collapsed to ANZSCO one-digit codes to provide a measure of occupational skill level ranging from 1 to 8 (highest to lowest skill). We also derived a dichotomous measure of occupational grouping from the ANZSCO 1-digit measure representing white-collar and blue-collar workers.Baseline surveys were collected November 2019–January 2020, and follow-up data collection commenced in March 2020, and was completed in June 2020.