The Pooled UAI Prevalence with Any Male Partner, by Subgroups.

†: Region division referred the government website (http://www.xzqh.org.cn/ONEWS_zq.asp?id=6162). Two articles were excluded: one in Ningxia in the northwest region, and one in Guangdong and Sichuan across two regions.†：区域划分标准参考自政府官方网站（http://www.xzqh.org.cn/ONEWS_zq.asp?id=6162）。本次共排除两篇文献：其一为研究区域位于西北宁夏的文献，其二为涵盖广东、四川两个区域的跨区研究文献。