目的应用流行病学和变量聚类分析的数理统计方法，对脑动脉硬化进行中医分型。
Objective To analyses the traditional Chinese medicine syndrome of cerebral arteriosclerosis, by the ways of clinical epidemiology and variable cluster analysis.
方法：收集380例胃炎(胃脘痛)病例，记录症状、舌象和脉象等临床资料，对临床资料进行变量聚类分析。
Methods: We collected the data of 380 gastritis (Weiwantong) patients include symptoms, tongues and pulses, then used variables cluster analysis to analyse it.
星座图与连接向量图是多变量统计的直观方法，可用于多变量样本或多变量指标的聚类分析。
Constellation diagram and contiguous vector diagram are audiovisual methods in multivariate statistics, they may be used for the cluster analysis of multivariate sample or index.
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