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基于主成份分析和方差分析思想， 提出一种纵向资料分析的序贯主成份方差分析法， 并对其步骤和特点等进行讨论． 将其用于两戒毒组的总生命质量的比较， 结果表明两戒毒组总生命质量在时间上的变化无统计学差异．
Based on the principal component analysis and analysis of variance theory, this paper proposes a sequential principal component analysis of variance method for longitudinal data analysis, and discusses its steps and features. It was compared with the total quality of life of the two detoxification groups. The results showed that there was no statistical difference in the total life quality of the two detoxification groups.