肺炎中医证型及症状特征的文献分析

目的：探讨肺炎的中医基本证型及其症状特征。方法：检索1981～2004年间发表的有关肺炎辨证分型文献，对其中的中医证型出现频率进行统计，在此基础上运用loglstic回归和聚类分析对各主要证型及其症状特征进行统计分析。结果：检索到符合要求的文献32篇，证型条目共计141条，出现频率较高的证型主要为痰热壅肺（50％）、风热犯肺（28．13％）、邪犯肺卫（28．13％）、痰湿阻肺（28．13％）、肺阴虚（25％）等；根据各主要证型的症状特征所构建的logistic回归方程，对证型的判别准确率均达90％以上；结合专业知识对主要症状进行聚类分析共得到15个基本类别。结论：通过对肺炎中医证型的相关文献进行统计分析，可为今后进一步开展肺炎证候研究提供参考和依据。

Literature Analysis on Pattern Types and Symptom Features of Pneumonia

Objective： To investigate the basic pattern types and their main symptom features of pneumonia. Methods： The literature concerning the pattern identification of pneumonia published from 1981 to 2004 were retrieved and the incidence frequencies of the pattern types were analyzed. On this basis, the main pattern types and their symptom features were analyzed with logistic regression and cluster analysis. Results： The sum of the literature meeting the requirement is 32, with 141 items concerning the pattern types. The main pattern types with higher incidence frequencies include： pattern of phlegm-heat obstructing lung（50%）, pattern of wind-heat invading lung（28.13%）, pattern of pathogenic factors invading lung（28.13%）, pattern of phlegmdamp obstructing lung（28.13%） and pattern of lung yin-deficiency（25%）; the accuracy of pattern identification of logistic regression equations based on the symptom features of various pattern types are higher than 90 percent; combined with the professional knowledge, in the cluster analysis for main symptoms, 15 clusters are acquired. Conclusion： The analysis on the literature of pattern identification of pneumonia can provide references and foundations for the further study of pattern identification of pneumonia in the future.