Associations between menstrual practices and health outcomes.

1Best estimate provided i.e. adjusted if available, otherwise unadjusted, see tables 1, 2, 3 for quality assessment; 2Authors created ‘Hygiene Index’ from composite score on scales for knowledge, attitudes and practices; 3Measure of effect not provided in paper, calculated separately by reviewers; 4Confidence interval not reported in paper and not possible to calculate from provided data; 5Unable to achieve clinical pregnancy after 12 months of unprotected sex; 6Direction of quote measure of effect converse of that quoted in paper.

1. 采用最优估计值：若存在调整后结果则使用调整值，否则采用未调整值；质量评估详见表1、表2、表3；
2. 研究者基于知识、态度、实践量表的综合得分构建了卫生指数（Hygiene Index）；
3. 原文未提供效应量指标，由审阅者另行计算得出；
4. 原文未报告置信区间，且无法通过已公布数据计算得到；
5. 无保护性行为持续12个月后未能实现临床妊娠；
6. 所引用的效应量指标方向与原文中记载的引用方向相悖；