Published: 2021-06-25

Factors associated with knowledge about the health effects of exposure to secondhand smoke among youth in Bangladesh

Rabeya Sultana


Background: Despite the high prevalence of secondhand smoke exposure among Bangladeshi adults, little is known about the knowledge regarding the health effects of exposure to secondhand smoke among the youth aged 15-24 years in Bangladesh. Against this background, the present study was conducted among the youth in Bangladesh to ascertain their levels of knowledge regarding health effects of secondhand smoke and its associated factors.

Methods: This was a cross-sectional study of 656 respondents between the age of 15-24 years old selected by multistage cluster sampling. This study was conducted in Dhaka Division, Bangladesh. Data was analyzed using Chi square testing and multivariate logistic regression.

Results: The proportion of good, average and poor knowledge scores among respondents were 30.5%, 50.0% and 19.5% respectively. Age and education were significant independent predictors of good knowledge. Furthermore, education and gender were tended as independent predictor of average knowledge. OR for age: 1.12 (95% CI: 1.01 to 1.25); OR for education: 1.27 (95% CI: 1.15 to 1.40).

Conclusions: Overall, the results of this study found that less than one-third of the youth had a good level of knowledge on secondhand smoke health effects. The government needs to focus more on less-educated individuals and adolescents if a successful policy is to be implemented.


Knowledge, Secondhand smoke, Youth, Bangladesh

Full Text:



WHO. Tobacco: fact Sheet, 2020. Available at: Accessed on 10 May 2021.

Yousuf H, Hofstra M, Tijssen J, Leenen B, Lindemans JW, Rossum A, et al. Estimated Worldwide Mortality Attributed to Secondhand Tobacco Smoke Exposure, 1990-2016. JAMA Netw Open. 2020;3(3):201177.

Lu L, Mackay DF, Pell JP. Secondhand smoke exposure and risk of incident peripheral arterial disease and mortality: a Scotland-wide retrospective cohort study of 4045 non-smokers with cotinine measurement. BMC Public Health. 2018;18(1):348.

Mdege N, Fairhurst C, Ferdous T, Hewitt C, Huque R, Jackson C, et al. Muslim Communities Learning About Second-hand Smoke in Bangladesh (MCLASS II): study protocol for a cluster randomised controlled trial of a community-based smoke-free homes intervention, with or without Indoor Air Quality feedback. Trials. 2019;20(1):11.

Raupach T, Schafer K, Konstantinides S, Andreas S. Secondhand smoke as an acute threat for the cardiovascular system: a change in paradigm. Eur Heart J. 2006;27(4):386-92.

Jordan RE, Cheng KK, Miller MR, Adab P. Passive smoking and chronic obstructive pulmonary disease: cross-sectional analysis of data from the Health Survey for England. BMJ Open. 2011;1(2):153.

Kim AS, Ko HJ, Kwon JH, Lee JM. Exposure to Secondhand Smoke and Risk of Cancer in Never Smokers: A Meta-Analysis of Epidemiologic Studies. Int J Environ Res Public Health. 2018;15(9):1981.

Nadhiroh SR, Djokosujono K, Utari DM. The association between secondhand smoke exposure and growth outcomes of children: A systematic literature review. Tob Induc Dis. 2020;18:12.

Khan A. An Analysis of the Anti-Tobacco Laws in Bangladesh. IJEER. 2018;1-15.

Bangladesh Bureau of Statistics and National Tobacco Control Cell. Global Adult Tobacco Survey Bangladesh Report 2017. Dhaka: Bangladesh Bureau of Statistics and National Tobacco Control Cell, 2019. Available at: uploads/editor/files/GATS%20Report%20Final-2017_20%20MB. Accessed on 10 May 2021.

Wang CP, Ma SJ, Xu XF, Wang JF, Mei CZ, Yang GH. The prevalence of household second-hand smoke exposure and its correlated factors in six counties of China. Tob Control. 2009;18(2):121-6.

Evans KA, Sims M, Judge K, Gilmore A. Assessing the knowledge of the potential harm to others caused by second-hand smoke and its impact on protective behaviours at home. J Public Health. 2012;34(2):183-94.

Sinha DN, Palipudi KM, Choudhury SR, Zaman MM, Islam MS, Hassan MA, et al. Global adult tobacco survey: Bangladesh report 2009. Available at: Accessed on 10 May 2021.

Almualm YK, Banafa NS, Hanshi AS. Knowledge, attitude and practice (KAP) about hepatitis B and C among students of Hadhramout University, Al-Mukalla City, Yemen. Acta Sci Med Sci. 2018;2(7):87-95.

Rahman M, Hasan SMM, Haque SE, Haque N, Rahman M, Mostofa G, et al. Secondhand smoking, knowledge/attitudes and socioeconomic status among married Bangladeshi women: a cross-sectional study. Sao Paulo Med J. 2019;137(1):13-24.

Sun MC, Frederic JDS. Knowledge of secondhand smoke and behaviour towards its exposure among teachers in Mauritius. Tob Prev Cessat. 2020;6:32.

Gharaibeh H, Haddad L, Alzyoud S, Shahawy O, Baker NA, Umlauf M. Knowledge, attitudes, and behavior in avoiding secondhand smoke exposure among non-smoking employed women with higher education in Jordan. Int J Environ Res Public Health. 2011;8(11):4207-19.

Fatema K, Hossain S, Natasha K, Chowdhury HA, Akter J, Khan T, et al. Knowledge attitude and practice regarding diabetes mellitus among Nondiabetic and diabetic study participants in Bangladesh. BMC Public Health. 2017;17(1):364.

Haque MA, Hossain MSN, Chowdhury MAB, Uddin MJ. Factors associated with knowledge and awareness of HIV/AIDS among married women in Bangladesh: evidence from a nationally representative survey. SAHARA J. 2018;15(1):121-7.

Vu GV, Ngo CQ, Phan PT, Doan LPT, Nguyen TT, Nguyen MH, et al. Inadequate Knowledge, Attitude and Practices about Second-Hand Smoke among Non-Smoking Pregnant Women in Urban Vietnam: The Need for Health Literacy Reinforcement. Int J Environ Res Public Health. 2020;17(10):3744.

Sim HS, Lee KS, Hong HS, Meng KH. The Awareness and Countermeasures against Harmful Effect of Passive Smoking in Korean Adults. Korean J Prev Med. 2000;33(1):91-8.

Lee SR, Cho AR, Lee SY, Cho YH, Park EJ, Kim YJ, et al. Secondhand smoke knowledge, sources of information, and associated factors among hospital staff. PLoS One. 2019;14(1):210981.

Alzahrani S. Levels and factors of knowledge about the related health risks of exposure to secondhand smoke among medical students: A cross-sectional study in Jeddah, Saudi Arabia. Tob Induc Dis. 2020;18:1-14.