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Important significant factors of health-related quality of life(EQ-5D) by age group in Korea based on KNHANES(2014)
Journal of the Korean Data & Information Science Society 2017;28:573-84
Published online May 31, 2017
© 2017 Korean Data & Information Science Society.

Hyun Sook Oh1

1Department of Applied Statistics, Gachon University
Correspondence to: Hyun Sook Oh
Professor, Department of Applied Statistics, Gachon University, Sungnam 13120, Korea. E-mail:
Received March 16, 2017; Revised May 11, 2017; Accepted May 18, 2017.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
The main purpose of this study is to investigate the important impacting factors of health-related quality of life (HRQOL) by different age groups. The subjects of this study were 5,976 adults over 19 based on data from the 2014 Korea National Health and Nutrition Examination Survey and EQ-5D index score was used for the measurement of HRQOL. Three age groups were considered of young (19-39), middle (40-65), and old (over 66) and for each age group Bayesian ordered probit model analysis was fitted to identify significant factors and their effects on HRQOL. Sex, subjective awareness of health, stress and diseases have been identified to be common important factors for all age groups. HRQOL of women is more likely to be lower than that of men. Subjective awareness of health affect positively but stress and diseases affect negatively on HRQOL. For middle age group, occupational activities have been found to be important positive factors on HRQOL. On the other hand, obesity is more important factor influencing on HRQOL negatively and frequent walking is recommended for old age group.
Keywords : Bayesian ordered probit model, EQ-5D, HRQOL, KNHANES.