[Changes in knowledge and behavior related to tobacco consumption among urban population before and after the enforcement of the Smoke Control Ordinance in Public Places of Hangzhou in 2010].
OBJECTIVE
To examine the changes in tobacco related knowledge, smoking habit and the amount if environmental tobacco smoke (ETS) among urban population before and after the enforcement of the Smoke Control Ordinance in Public Places of Hangzhou in March 2010.


METHODS
Two independent cross-sectional surveys were conducted on random samples from adults aged 18 - 64 years in three districts of Hangzhou city between two petiods: October 2008 to August 2009 and June 2011 to February 2012.


RESULTS
A total of 2016 adults at the initial stage and 2016 adults during the follow-up program completed the survey. Nine out of the ten indices related to the knowledge on tobacco presented an improvement during the follow-up process. All the participants (22.4% vs. 17.7%, P < 0.001) and men (44.2% vs. 37.3%, P = 0.004) showed statistically significant declines in the prevalence of smoking, when compared with women (1.7% vs. 1.2%, P = 0.379). The proportions of individuals who had noticed anyone smoking in the previous 30 days demonstrated statistically significant declines in nine types of places: school (5.6% vs. 2.7%, P < 0.001), health centre (11.4% vs. 3.7%, P < 0.001), public transportation (19.2% vs. 12.2%, P < 0.001), government building (11.3% vs. 5.6%, P < 0.001), restaurant (67.0% vs. 61.3%, P = 0.002), workplace (49.7% vs. 38.3%, P < 0.001), private office building (23.6% vs. 19.9%, P = 0.023), home (41.0% vs. 35.5%, P = 0.003), friend's home (33.9% vs. 29.5%, P = 0.017).


CONCLUSIONS
Positive changes were noticed among urban population with respect to tobacco related knowledge, prevalence of smoking, and the environmental tobacco smoke (ETS) after the enforcement of the Smoke Control Ordinance in Public Places of Hangzhou.
Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing 100191, China.
Ping-ping
PP
He
Qing-min
QM
Liu
Yan-jun
YJ
Ren
Fang
F
Gao
Jun
J
Lü
Li-ming
LM
Li
D000293:Adolescent; D000328:Adult; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008297:Male; D008875:Middle Aged; D012907:Smoking / Q000331:legislation & jurisprudence / Q000523:psychology*; D000074606:Smoking Prevention; D011795:Surveys and Questionnaires; D014028:Tobacco Smoke Pollution / Q000517:prevention & control / Q000706:statistics & numerical data; D020340:Tobacco Use Cessation
D014028:Tobacco Smoke Pollution