Wei H C, Chen Q, Wang L H
School of Public Health, Beijing Medical University.
Zhonghua Zhong Liu Za Zhi. 1988 Jan;10(1):9-11.
18 factors, including possible lung cancer-causing factors and body selenium (Se) levels, were analyzed by computer-based multiple stepwise regression and main component analysis. 1. The results indicated that Se levels in blood, hair and lung had correlation with lung cancer to some extent. 2. The correlation of blood and lung Se was the most significant one, the significance of which was only second to age and smoking habits. The standardized regression and factor load coefficients showed a negative correlation with blood Se level and a positive one with lung Se level, which corresponded with the results obtained by the single factor analysis.
通过计算机多步逐步回归和主成分分析，对包括可能的肺癌致病因素和人体硒（Se）水平在内的18个因素进行了分析。1. 结果表明，血液、头发和肺中的硒水平与肺癌在一定程度上存在相关性。2. 血液和肺中硒的相关性最为显著，其显著性仅次于年龄和吸烟习惯。标准化回归系数和因子载荷系数显示，与血硒水平呈负相关，与肺硒水平呈正相关，这与单因素分析结果一致。
