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Background: Passive smoking is an important worldwide public health issue. In many Korean studies, parental
smoking has been reported to be associated with reduced pulmonary function in children. But few studies have
evaluated the effects of passive smoking on pulmonary function in adults. Therefore, we looked into this association
in the study.
Methods: Participants in the study included non-smoking, healthy men (n=46) and women (n=326) from rural
Korea enrolled from June to December 2006. Exposure to passive smoking was assessed by a self-administered
questionnaire, and standardized pulmonary function tests were performed.
Results: There were significant reductions in forced expiratory volume in 1 second (FEV1, % of predicted) and
forced mean expiratory flow rate 25-75% (%) among the men exposed to passive smoke compared with those
not exposed (55.7 vs 75.8, P=0.010; 33.9 vs 58.6, P=0.029, respectively). There were significant reductions in
FEV1 among men exposed at both workplace and home compared with men exposed only at either workplace
or home (42.8 vs 49.3, 64.6; P=0.034). No significant difference in pulmonary function was found between
women exposed to passive smoke compared those not exposed. There were, however, reductions in FEV1 and
FEV1/forced vital capacity among the women exposed at workplace. Regression analysis showed that passive
smoking negatively affected lung function, which were not statistically significant.
Conclusions: Exposure to environmental tobacco smoke, particularly at the workplace, adversely affects pulmonary
function in adults.
Keywords: Passive smoking, Pulmonary function tests, Adults, Workplace |