Correlates of Tobacco Use Among People with Mental Illness Within Asia: A Scoping Review

Tobacco use among people with mental illness is one of the contributing risk factors for premature morbidity and mortality. Two in three people with mental illness are current smokers with deteriorating physical health and quality of life. This review outlines the prevalence and predictors of tobacco use among people with mental illness in Asia. Twenty-five cross-sectional studies were selected from the exhaustive search of databases. Ten countries emerged based on the number of studies conducted within Asia among people diagnosed with mental illness and tobacco use, namely, India (8), China (7), Pakistan (2), Singapore (2), Sri Lanka (01), Japan (01), Jordan (01), Malaysia (01), Korea (01), and Taiwan (01). The prevalence of tobacco use was in the range of 3.6% to 89.4%, with the measure of precision at 95% confidence. The highest and lowest prevalence was reported in China, followed by India. Being male, separated, lower education, unemployed, lack of family support, a psychotic diagnosis, lack of knowledge, motivation, and a coping mechanism were predictors of tobacco use. This review emphasized the extent and predictors of tobacco use among this vulnerable group that need to be reflected while initiating and implementing cessation strategies by healthcare providers.