Meta-analysis of the relationship between passive smoking population in China and lung cancer / 中国肺癌杂志

<p><b>BACKGROUND AND OBJECTIVE</b>Studies of passive smoking exposure in China however are of particular interest, because of the high lung cancer rate in people who are mostly non-smokers. The aim of this study is to explore the relationship between passive smoking and lung cancer among non-smoking Chinese.</p><p><b>METHODS</b>By searching Medline, PubMed, CENTRAL (the Cochrane central register of controlled trials), CBM, CNKI and VIP, et al, we collected both domestic and overseas published documents between 1987 and 2007 on passive smoking and lung cancer among non-smoking Chinese. Random or fixed effect models were applied to conduct meta-analysis on the case control study results, and the combined odds ratio (OR) and the 95% confidence interval (CI) were calculated as well.</p><p><b>RESULTS</b>Sixteen documents were included into the combined analysis, which indicated that there was statistical significance between passive smoking and lung cancer (OR = 1.13, 95% CI: 1.05-1.21, P = 0.001). It was significant of lung cancer among non-smoking subjects associated with amount of tobacco passively smoked more than 20 cigarettes daily, with life period in adulthood passive smoking exposure, with gender female, and with exposure to workplace. The P value, OR and 95% CI were P = 0.0003, OR = 1.78, 95% CI: 1.30-2.43; P = 0.0001, OR = 1.50, 95% CI: 1.23-1.83; P = 0.000 7, OR = 1.50, 95% CI: 1.19-1.90; P < 0.0001, OR = 1.41, 95% CI: 1.19-1.66; respectively. And there was no significant difference between passive smoking and lung cancer with amount of tobacco passively smoked within 20 cigarettes daily, with life period in childhood passive smoking exposure, with gender male and with exposure to spouse and parents.</p><p><b>CONCLUSION</b>Passive smoking is an important risk factor of lung cancer among non-smoking Chinese, and for non-smoking women who expose to environment tobacco smoke in a long period of time have a close relationship with lung cancer risk.</p>

An Experimental Research on Self-schema of Children with Different Self-supporting Levels / 中国临床心理学杂志

Objective:To validate whether there is self-schema of self-supporting and to look into the difference in amount of recall,amount of recognition and reaction time between children with high score of self-sporting and those with low score.Methods:Levels of self-supporting of 300 sixth grade students from a primary school in Hunan were assessed by using a Self-supporting Behavior Questionnaire for Six to Twelve Years'Old Children,and the subjects were grouped into two groups,of which the high-score group includes the top 35 from the questionnaire result,and the low-group includes the lowest 35.Then the SRET task was assigned to the two groups and a contrastive study of their self-schema was carried out.Results:The amount of recognition of self-supporting words by the two groups is larger than that of non-self-supporting words;The reaction time of the self-supporting group is longer than that of the other group;there is no significant difference in the amount of correct recognition.Conclusion:High self-supporting group showed self schema of self-supporting,and low self-supporting group showed not only self schema of non-self-supporting but also that of self-supporting,which implies that self-supporting is not a dichotomy concept of self.