...差的特征值（注意我们在过程中用了COV选项，无此选项用相关阵），从这里可以看到贡献率（Proportion）和累计贡献率（Cumulative），第三部分为特征向量。按本结果的特征向量值及用COV选项规定使用协方差阵，我们可以知道两个主成份如此计算：
基于14个网页-相关网页
这4个主因子对变异的累计贡献率为85%以上，基本保持了13个性状的绝大部分信息。
The accumulative contribution rate of the 4 major factors to total variation accounted for over 85%, maintaining most of information of 13 characters.
采用冈子分析法，共提取6个公因子，累计贡献率为66.76%，基本证实了其结构效度；
Construct validity was appraised by factor analysis, and 6 factors were identified. These factors could explain 66.76 % of the total variance.
其中，西药费、中成药费、检查费、治疗费是影响费用变动的主要项目，四项累计贡献率为76.135%。
Among them, the western medicine expenses, Chinese medicine expenses, examination expenses and treatment expenses were dominate items, with cumulative contribution of 76.135%.
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