Monitoring changes in smoking and quitting behaviours among Australians with and without mental illness over 15 years.

Objective: This study examines smoking prevalence and quitting behaviours among Australians with and without mental illness.

Methods: Analysis of data from Australia's triennial National Drug Strategy Household Surveys 2004-2019. The prevalence of regular smokers, never smokers, the quit proportion, cigarette consumption, and use of cessation aids were examined for those with and without mental illness.

Hardening or softening? An observational study of changes to the prevalence of hardening indicators in Victoria, Australia, 2001-2016.

Background: The hardening hypothesis predicts that as smoking prevalence declines, remaining smokers will be more heavily addicted to nicotine and/or less interested in quitting. We tested this hypothesis in a population exposed to a comprehensive tobacco control programme over a 16-year period.

Methods: Annual cross-sectional surveys randomly sampled adults (aged 26+) in the state of Victoria, Australia, between 2001 and 2016.