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Article: A prospective study on smoking, quitting and mortality in a cohort of elderly in Xi'an, China

TitleA prospective study on smoking, quitting and mortality in a cohort of elderly in Xi'an, China
老年人吸煙及戒煙與相關死亡的前瞻性研究
Authors
Issue Date2002
PublisherChinese Medical Association [中華醫學會]. The Journal's web site is located at http://zhlxbx.periodicals.net.cn/
Citation
中華流行病學雜誌, 2002, v. 23 n. 3, p. 186-189 How to Cite?
Chinese Journal of Epidemiology, 2002, v. 23 n. 3, p. 186-189 How to Cite?
AbstractObjective To prospective examine the relationship between smoking, quitting and mortality in older Chinese men by in Xi’an, China. Methods The design was a cohort analytic study. One thousand two hundred and sixty eight retired male military veterans aged 60 or older were examined in 1987. At baseline, there were 388 never smokers, 461 former smokers and 419 current smokers. Main outcome measure was all cause and tobacco associated mortality. Results Through 1999, 299 had died, 943 were alive and 26 lost. The mean follow up time was 11 years and total person year of follow up was 14 163 . After adjusting for age, blood pressure, body mass index, total cholesterol, triglycerides, alcohol intake, exercise and existing diseases, using Cox proportional hazard regression model, the relative risks (95% confidence intervals) for ever smoking, deaths resulting from all causes, chronic obstructive pulmonary disease (COPD), lung cancer and coronary heart disease (CHD) were 1.34(1.02 1.76), 3.23(0.95 10.91), 2.31( 0.95 5.61) and 1.60( 0.81 3.19) respectively. The risks increased significantly with increasing amount and duration of smoking. Compared with current smokers, former smokers had lower risks of total mortality (excess risk reduction of 56%) and from CHD death (93%), but had higher risks for COPD death (excess risk increased 174%). Conclusions Smoking is a major cause of death in older Chinese men and quitting can save lives. These results showing that higher risks of COPD death in former smokers with or without existing diagnosed COPD at baseline than those in current smokers could be explained by either the 'healthy smoker effect' or the 'ill quitter effect' or both. Early recognition of the significance of COPD symptoms followed by prompt quitting should be emphasized as strategies in the control of the growing tobacco epidemic.
Persistent Identifierhttp://hdl.handle.net/10722/86938
ISSN
2015 SCImago Journal Rankings: 0.191

 

DC FieldValueLanguage
dc.contributor.authorHe, Yen_HK
dc.contributor.authorLam, THen_HK
dc.contributor.authorShi, QLen_HK
dc.contributor.authorHuang, JYen_HK
dc.contributor.authorZhang, Fen_HK
dc.contributor.authorWan, ZHen_HK
dc.contributor.authorLi, LSen_HK
dc.date.accessioned2010-09-06T09:23:11Z-
dc.date.available2010-09-06T09:23:11Z-
dc.date.issued2002en_HK
dc.identifier.citation中華流行病學雜誌, 2002, v. 23 n. 3, p. 186-189en_HK
dc.identifier.citationChinese Journal of Epidemiology, 2002, v. 23 n. 3, p. 186-189-
dc.identifier.issn0254-6450-
dc.identifier.urihttp://hdl.handle.net/10722/86938-
dc.description.abstractObjective To prospective examine the relationship between smoking, quitting and mortality in older Chinese men by in Xi’an, China. Methods The design was a cohort analytic study. One thousand two hundred and sixty eight retired male military veterans aged 60 or older were examined in 1987. At baseline, there were 388 never smokers, 461 former smokers and 419 current smokers. Main outcome measure was all cause and tobacco associated mortality. Results Through 1999, 299 had died, 943 were alive and 26 lost. The mean follow up time was 11 years and total person year of follow up was 14 163 . After adjusting for age, blood pressure, body mass index, total cholesterol, triglycerides, alcohol intake, exercise and existing diseases, using Cox proportional hazard regression model, the relative risks (95% confidence intervals) for ever smoking, deaths resulting from all causes, chronic obstructive pulmonary disease (COPD), lung cancer and coronary heart disease (CHD) were 1.34(1.02 1.76), 3.23(0.95 10.91), 2.31( 0.95 5.61) and 1.60( 0.81 3.19) respectively. The risks increased significantly with increasing amount and duration of smoking. Compared with current smokers, former smokers had lower risks of total mortality (excess risk reduction of 56%) and from CHD death (93%), but had higher risks for COPD death (excess risk increased 174%). Conclusions Smoking is a major cause of death in older Chinese men and quitting can save lives. These results showing that higher risks of COPD death in former smokers with or without existing diagnosed COPD at baseline than those in current smokers could be explained by either the 'healthy smoker effect' or the 'ill quitter effect' or both. Early recognition of the significance of COPD symptoms followed by prompt quitting should be emphasized as strategies in the control of the growing tobacco epidemic.-
dc.languagechien_HK
dc.publisherChinese Medical Association [中華醫學會]. The Journal's web site is located at http://zhlxbx.periodicals.net.cn/-
dc.relation.ispartof中華流行病學雜誌en_HK
dc.relation.ispartofChinese Journal of Epidemiology-
dc.titleA prospective study on smoking, quitting and mortality in a cohort of elderly in Xi'an, Chinaen_HK
dc.title老年人吸煙及戒煙與相關死亡的前瞻性研究-
dc.typeArticleen_HK
dc.identifier.emailHe, Y: yaohe@hkucc.hku.hken_HK
dc.identifier.emailLam, TH: hrmrlth@hkucc.hku.hken_HK
dc.identifier.authorityLam, TH=rp00326en_HK
dc.identifier.doi10.3760/j.issn:0254-6450.2002.03.008-
dc.identifier.hkuros96661en_HK
dc.identifier.volume23-
dc.identifier.issue3-
dc.identifier.spage186-
dc.identifier.epage189-
dc.publisher.placeChina-

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