Population aging has become more and more severe in many countries. As a result, the demand for basic elderly care services has risen. The establishment of an evaluation index system for basic elderly care services can provide guidelines for governments to improve the quality of such services. Based on the "5A" theoretical analysis framework of Penchansky and Thomas, this paper introduces the concept of "accessibility" into evaluation. The "accessibility" model of services, through a literature review, field research, and three rounds of expert correspondence, consists of three first-level indicators, including the accessibility of home-based community elderly care services, the accessibility of institutional elderly care services, and the accessibility of administrative services. The evaluation index system of 15 s-level indicators and 70 third-level indicators, using AHP to determine the weight value of each indicator, provides a quantitative basis for the quality evaluation and improvement of basic elderly care services. Based on our quantitative results, policy recommendations are put forward: strengthen the support for the human and financial resources of community home-based elderly care services; improve the affordability of basic elderly care services; increase the types and numbers of institutional elderly care service projects; improve the availability and adaptability of institutional elderly care services; improve the accessibility of administrative services so that elderly care service institutions and elderly care administrative agencies can establish an effective communication and feedback mechanism.
Keywords: AHP; accessibility; basic elderly care services; evaluation index system; population aging.