Additional file 4 of Association between maternal overprotection and premenstrual disorder: a machine learning based exploratory study

Additional file 4. PBI scores of the PMD and non-PMD groups. This file presents the descriptive statistics of the two groups for the PBI and the results of the Mann–Whitney U-test and Welch’s t-test, used to compare the groups.附加文件4：PMD组与非PMD组的PBI评分。本文件呈现了两组的PBI描述性统计数据，以及用于组间比较的曼-惠特尼U检验（Mann–Whitney U-test）与韦尔奇t检验（Welch’s t-test）的分析结果。