Welfare subjective evaluation. Application to health systems Access

Abstract

Subjective assessments of life quality are considered when measuring development. Information isobtained through simple surveys that capture subjective perceptions of access to certain goods.To formalize human ability to make decisions in uncertain environments, Zadeh (2011) defined Znumbers, which provide a vague assessment and an idea of their reliability. Both can be expressed bylinguistic variables.In this paper we present a subjective valuation index of economic welfare with Z information and itis applied to household evaluation of health system access.