Indian J Med Res
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Background & objectives This study aimed to compare the prevalence and identify the patterns of second-hand smoke (SHS) exposure among non-smoking Indian youth (ages 15-24 and 25-29 yr) in various settings-homes, workplaces, public places, and a combination of these locations-based on sociodemographic factors and knowledge about the health implications of smoking. The purpose of the study was to identify the factors influencing SHS exposure in India between the Global Adult Tobacco Survey (GATS) I and II. Methods Secondary data analysis was conducted utilising GATS I and II data to analyse the prevalence and patterns of SHS exposure at home, workplace, public place and all the places combined among non-smoking youths aged 15-29 yr. ⋯ Interpretation & conclusions Our secondary analysis of GATS data from 2009-10 to 2016-17 reveals a decline in SHS exposure at home and public places but an increase in workplaces among non-smoking youth. Factors like female gender, higher education, and wealth were linked to lower SHS exposure, while rural residence and self-employment indicated higher risks. These findings underscore the need for targeted, community-based interventions and stricter enforcement of anti-tobacco laws to protect non-smoking youth in India.