脑梗塞危险因素的交互作用分析

本研究通过１：１本比病例对照研究。对脑梗塞危险因素之间的交互作用进行了分析。结果表明：脑梗塞的主要危险因素为ＴＧ、Ｌｐ（ａ）和ＢＭＩ，而ＨＤＬ－Ｃ是唯一的保护因素，Ｌｐ（ａ）与ＢＭＩ进行分级后，仍可看出对脑梗塞的剂量效应关系，考虑到各因素间较镪的相关关系，进一步对入选因素进行了对数线性模型拟合，结果显示：是否患脑梗塞与ＴＣ、ＴＧ、ＨＤＬ－Ｃ、Ｌｐ（ａ）之间的交互作用显著，ＴＣ、ＴＧ、ＨＤＬ－Ｃ和Ｌ

Analysis on the Interaction Among Agents in Arteriosclerotic Cerebral Infarction

An 1:1 matched case-control study including 105 arteriosclerotic cerebral infarction cases and 105 controls was carried out to estimate the etiologic interaction, in Yi-xing city, March 1997. Results showed that the major risk factors were high levels of serum TG, Lp(a) and BMI while serum level of HDL-C was the only protective factor. When several levels were divided on Lp(a) and BMI, a significantly dose response relation was found. Considering the correlation among serum concentration of lipids, we analysed the interaction of different factors, using Log-Linear models. Results showed that there were significant interactions between arteriosclerotic cerebral infarction and TC, TG, HDL-C and Lp(a). There were also interactions between TC, TG, HDL-C and LDL-C. However, the strongest interaction is expected to happen at what level remains further investigations.