Abstract: To evaluate the influences of home-based elder care services on the quality of life for the elderly, the paper constructs related indexes and analyzes the data from CLASS with Propensity Score Matching Method. Conclusions: (1) Home-based elder care services can improve the quality of life for the elderly. The standard score of the Average effect of the Treatment on the Treated (ATT) is 0.315, but the score of those in rural areas is 5.5 times larger than that in urban areas. (2) ATT is rising, but the intervention effects diverge between rural and urban areas with an increasing trend in rural areas and a decreasing trend in urban areas. (3) An evaluation method for the intervention effects has been explored. Suggestions: We shall improve the quality of the home-based elder care services, and explore factors that affect the quality of life for the elderly. We can perfect relevant development paths and evaluation systems, and improve the intervention effects by promoting the fairness of service utilization.

Keywords: Intervention Effects, Quality of Life for the Elderly, Propensity Score Matching, Urban-Rural Disparity, Trend of Development

摘要： 为科学评估居家养老服务对中国老年人生活质量的影响，构建了老年人生活质量指数，采用倾向值匹配方法对2018年中国老年社会追踪调查数据(CLASS)进行了分析，并考察了3期数据的发展趋势。得出结论，(1)使用居家养老服务可以改善老年人的生活质量，总效应为0.315个标准分，且农村约是城市的5.5倍；(2)9种居家养老服务改善老年人生活质量的总效应呈增高趋势，但在农村干预效应一路攀升的同时城市却出现了持续下降；(3)初步探索出一条科学评估中国居家养老服务干预效应的路径。对此建议，按照城乡有别的思路推进居家养老服务高质量发展、深入研究城乡老年人生活质量的规律性，对比并以此为抓手完善其发展路径和评估体系，同时从促进服务使用公平性入手提高其干预效应。

关键词: 干预效应, 老年人生活质量, 倾向值分析, 城乡差异, 发展趋势