Adolescents' knowledge, attitude and perceived risks towards e-cigarette usage in Johor Bahru, Malaysia.

Objectives: To evaluate adolescents' knowledge, attitude, and risk perceptions regarding e-cigarette usage and examine the associations and differences across various socio-demographic characteristics.

Methods: A cross-sectional study was conducted in two government secondary schools in Johor. A total of 391 respondents were enrolled conveniently using a pre-validated questionnaire. The data were analysed using SPSS descriptive and inferential statistics.

Results: Most participants demonstrated a moderate level of knowledge regarding e-cigarettes (77.5 %), achieving an average score of 3.82 (±0.89). A significant portion of the respondents were female (56.3 %) and Chinese (57.5 %), predominantly aged between 16 and 17 years (53.7 %). Presently, 11.5 % of the participants reported using e-cigarettes, while 6.6 % reported using traditional tobacco cigarettes. Notably, 12.3 % of adolescents correctly identified nicotine as a common component in e-cigarettes, highlighting its addictive nature. Furthermore, significant association and differences were observed between e-cigarette usage and a positive attitude towards them (86.7 %, p<0.001), as well as the perception of reduced health risks associated with e-cigarette consumption (9.11 ± 2.68, p<0.001). Adolescents who were susceptible to e-cigarette use were more inclined to support their usage (63.1 %, p<0.001) and perceived fewer health consequences (6.91 + 3.12, p=0.019) in comparison to those who were not susceptible.

Conclusions: E-cigarette users exhibited a moderate level of understanding along with a positive stance towards e-cigarettes, viewing them as less risky compared to non-e-cigarette users. As a result, collaborative endeavours are essential to enhance adolescent knowledge about e-cigarettes via community outreach initiatives. Consequently, all governing bodies must explore effective strategies to tackle this issue by implementing strict legislation.