目的 通过Meta分析明确中国老年人孤独感的总体流行率及其在人群中的差异。方法 检索PubMed、Embase、Web of Science等9个中英文数据库，检索时限自建库至2024年3月。2名研究者独立完成文献筛选、质量评价和信息提取，使用STATA 14.2软件进行统计分析。结果 共纳入58项研究，涉及271 094名中国老年人。中国老年人孤独感的流行率为47.2%[95%CI（0.41，0.54）]，且在性别、年龄、文化程度、婚姻状况、居住状况、与家庭成员的关系、慢性病、视听力障碍、经济状况、吸烟与否、兴趣爱好、运动锻炼、地域和测量工具等方面差异均有统计学意义（均P＜0.05）。结论 中国老年人孤独感流行率较高，不同人群间差异显著，未来需进一步探讨其风险和保护因素。

Objective To determine the overall prevalence of loneliness among elderly adults in China and its variations among different subgroups through a Meta-analysis.Methods Nine Chinese and English databases,including PubMed,Embase and Web of Science,were searched for literature published from their inception to March 2024.Two researchers independently conducted the literature screening,quality assessment,and data extraction.Statistical analyses were performed using the STATA14.2 software.Results A total of 58 studies involving 271,094 elderly Chinese were included.The overall prevalence of loneliness among elderly Chinese was 47.2%[95%CI（0.41，0.54）].Loneliness varied significantly among different subgroups based on factors such as gender,age,education level,marital status,living arrangement,relationship with family members,chronic disease,hearing and vision impairment,economic status,smoking status,hobbies and interests,physical exercise,geographic location,and measurement tools (all P＜0.05).Conclusions Loneliness is prevalent among elderly Chinese,with significant variations among different subgroups.Further research is needed to explore the risk and protective factors of loneliness among elderly Chinese.

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国家社会科学基金重大项目（21&ZD188）；教育部人文社会科学研究青年基金项目（20YJCZH088）