Cheng Hui G, McBride Orla, Phillips Michael R
Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
School of Psychology, University of Ulster, Londonderry, Northern Ireland.
Tob Control. 2015 Jan;24(1):54-61. doi: 10.1136/tobaccocontrol-2013-051163. Epub 2013 Aug 29.
This analysis estimates the association between smoking-related knowledge and smoking behaviour in a Chinese context. To identify the specific knowledge most directly related to smoking status, we used a novel latent variable analysis approach to adjust for the high correlations between different measures of knowledge about tobacco smoking.
Data are from the Global Adult Tobacco China Survey, a nationally representative sample of 13 354 household-dwelling individuals 15 years of age or older. Multinomial logistic regressions estimated the association between smoking status (ie, never smoked, current smoker or past smoker) and four smoking-related beliefs: whether or not smoking causes lung cancer, heart attack and stroke, and whether or not low-tar cigarettes are less harmful. A latent variable approach reassessed these associations while taking into account the general level of knowledge about smoking.
After demographic variables and general knowledge about smoking had been controlled for, the belief that low-tar cigarettes are not less harmful was more prevalent in persons who had never smoked than in current smokers (OR=1.3 (95% CI 1.0 to 1.7) in men and OR=2.8 (95% CI 1.3 to 5.9) in women); this association was even stronger when past smokers and current smokers were compared (OR=2.1 (95% CI 1.5 to 3.0) in men and OR=5.0 (95% CI 1.3 to 20.1) in women).
Compared with those who have never smoked and those who have ceased smoking, current smokers in China are more likely to believe that low-tar cigarettes are less harmful than regular cigarettes.
本分析评估了在中国背景下吸烟相关知识与吸烟行为之间的关联。为确定与吸烟状况最直接相关的具体知识，我们采用了一种新颖的潜在变量分析方法，以调整关于吸烟的不同测量指标之间的高相关性。
数据来自“全球成人烟草调查中国部分”，这是一个具有全国代表性的样本，包含13354名年龄在15岁及以上的居住在家中的个体。多项逻辑回归分析评估了吸烟状况（即从不吸烟、当前吸烟者或既往吸烟者）与四种吸烟相关信念之间的关联：吸烟是否会导致肺癌、心脏病发作和中风，以及低焦油香烟是否危害较小。一种潜在变量方法在考虑吸烟一般知识水平的同时重新评估了这些关联。
在控制了人口统计学变量和吸烟一般知识后，认为低焦油香烟危害并不小的信念在从不吸烟者中比在当前吸烟者中更为普遍（男性的比值比[OR]=1.3（95%置信区间[CI]为1.0至1.7），女性为OR=2.8（95%CI为1.3至5.9））；当比较既往吸烟者和当前吸烟者时，这种关联更强（男性的OR=2.1（95%CI为1.5至3.0），女性为OR=5.0（95%CI为1.3至20.1））。
与从不吸烟和已戒烟者相比，中国的当前吸烟者更有可能认为低焦油香烟比普通香烟危害小。
