Quality of Life Research

, Volume 22, Issue 8, pp 2245–2253

Psychometric properties of the EQ-5D-5L in the general population of South Korea

Authors

  • Tae Hyup Kim
    • Health Screening and Promotion CenterAsan Medical Center
    • Department of Preventive MedicineUniversity of Ulsan College of Medicine
  • Sang-il Lee
    • Department of Preventive MedicineUniversity of Ulsan College of Medicine
  • Seon Ha Kim
    • Department of Preventive MedicineUniversity of Ulsan College of Medicine
  • Son Mi Chung
    • Center for Health PromotionSamsung Medical Center
Article

DOI: 10.1007/s11136-012-0331-3

Cite this article as:
Kim, T.H., Jo, M., Lee, S. et al. Qual Life Res (2013) 22: 2245. doi:10.1007/s11136-012-0331-3

Abstract

Purpose

The EQ-5D-5L was developed to compensate for a high ceiling effect and lack of descriptive richness of the EQ-5D-3L. We evaluated psychometric properties of EQ-5D-5L in the general population.

Methods

Six hundred of adults were sampled from the general population in South Korea using a multistage stratified quota sampling method. Participants completed the EQ-5D-5L, EQ-5D-3L, and SF-36v2. One hundred participants were resurveyed for reliability evaluation. The ceiling effect, known-groups construct validity, convergent and discriminant validity, and reliability of EQ-5D-5L were evaluated.

Results

A smaller proportion of participants answered ‘no problem’ to all dimensions of EQ-5D-5L (61.2 %) than EQ-5D-3L (65.7 %, p < 0.01), indicating a reduced ceiling effect. Female, elderly, low-educated, and low-income participants reported health problems more frequently, indicating known-groups construct validity. The mobility dimension of EQ-5D-5L was better correlated with the physical component score (|r| = 0.48) than the mental component score (|r| = 0.25) of the SF-36v2, and the anxiety/depression dimension was better correlated with mental component score (|r| = 0.45) than physical component score (|r| = 0.34), indicating convergent and discriminant validity. The intraclass correlation coefficient of EQ-5D-5L index was 0.75.

Conclusions

The EQ-5D-5L has a smaller ceiling effect than the EQ-5D-3L and is a valid and reliable instrument to measure health-related quality of life in the general population.

Keywords

Helath-related quality of life EQ-5D Psychometrics Validity Reliability SF-36

Abbreviations

EQ-5D-3L

3-Level version of EQ-5D

EQ-5D-5L

5-Level version of EQ-5D

HRQoL

Health-related quality of life

VAS

Visual analogue scale

ICC

Intraclass correlation coefficient

SF-36v2

Version 2.0 of the short-form 36

PF

Physical functioning

RP

Role-physical

BP

Bodily pain

GH

General health

VT

Vitality

SF

Social functioning

RE

Role-emotional

MH

Mental health

PCS

Physical component summary

MCS

Mental component summary

Copyright information

© Springer Science+Business Media Dordrecht 2012