Assessing the Content Validity of the EQ-5D Questionnaire Among Asians in Singapore: A Qualitative Study

Introduction: Although the EQ-5D questionnaire is widely used to measure health status internationally, there is little evidence of its content validity in Asian populations. This qualitative study aimed to explore the content validity of the EQ-5D in Singapore. Materials and Methods: Sixty Singaporeans (Chinese: 20; Malay: 20; Indian: 20) completed semi-structured interviews in which they were asked about health concepts which were important to...