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HINT-8 도구에서 EQ-5D 도구들로의 Mapping을 이용한 전환식 도출 연구

A study on deriving a conversion formulae using mapping between HINT-8 and EQ-5D instruments

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초록

본 연구에서는 건강관련 삶의 질 측정도구로 널리 쓰이고 있는 EQ-5D 도구들과 질병관리본부에서 국민건강영양조사에 사용할 목적으로 개발한 HINT-8 도구를 통해 얻어진 각각의 삶의 질 효용 값을 이용하여 EQ-5D 지수 산출을 위한 전환식을 도출하고, 이를 통해 HINT-8의 활용 가능성을 알아보고자 하였다. 연구를 위해 우리나라 일반인 220명을 대상으로 EQ-5D-3L, EQ-5D-5L, EQ-VAS, HINT-8 도구를 이용하여 설문을 실시하였으며 설문 내용은 SPSS 25.0을 이용하여 분석하였다. 연구 결과, 건강관련 삶의 질 지수의 평균은 EQ-5D-3L에서 0.94, EQ-5D-5L에서 0.91, EQ-VAS에서 0.84, HINT-8에서 0.84로 나타났다. 천장효과는 EQ-5D-3L에서 51.4%, EQ-5D-5L에서 47.3%, HINT-8에서 1.8%이었다. EQ-5D 도구와 HINT-8 도구 간의 관련성을 살펴본 결과 EQ-5D-3L 지수와 EQ-5D-5L 지수간의 상관관계가 0.82로 가장 높았다. 이번에 개발된 전환식은 국내 인구집단에서 가중치 연구가 출간되어 건강관련효용 측정 시 실질적으로 사용가능한 모든 도구들간의 비교를 가능하게 한다는 점에서 의의가 있다. 특히 앞으로 국민건강영양조사에서 사용될 HINT-8의 측정치를 기존의 조사에서 사용되었던 EQ-5D-3L 도구의 값과 비교하거나, 2016년에 국내 가중치가 출판된 EQ-5D-5L 도구의 측정치들과 비교하는데 유용할 것으로 생각된다.

Abstract

The objective of this study was to derive conversion formulae among HINT-8 and EQ-5D instruments. Total 220 people were surveyed using EQ-5D-3L, EQ-5D-5L, EQ-VAS, and HINT-8 instruments and pairwise conversion formulae were derived using regressions. The average of health utility scores in EQ-5D-3L, EQ-5D-5L, EQ-VAS, and HINT-8 was 0.94, 0.91, 0.84, 0.84, respectively. The ceiling effect was 51.4% in EQ-5D-3L, 47.3% in EQ-5D-5L, and 1.8% in HINT-8. The correlation between EQ-5D-3L and EQ-5D-5L utility scores was the highest (r=0.82), and also the ones between EQ-5D-3L and HINT-8 and between EQ-5D-5L and HINT-8 showed high correlations. The association of domains between EQ-5D instruments and HINT-8 showed pain and depression domains have high correlation coefficients, r=0.69 and r=0.78, respectively. The derived conversion formulae showed explanatory power of 57~69% and they seems to be reasonable. When converting the HINT-8 to EQ-5D-3L, the derived range was from 0.474 to 1, while the conversion range for EQ-5D-5L was from 0.259 to 1. The derived conversion formulae from this study considered all the available health related utility instruments in Korea. The others do not have a valuation study in Korea yet. Hence, this study has an importance that comparisons among the available health related utility measures in Korea. More specifically, the comparison between the future estimates of HINT-8 in the Korean National Health and Nutrition Survey (KNHANES) and the past estimates of EQ-5D-3L in the KNHANES will be possible. Also the comparison between HINT-8 and EQ-5D-5L will be useful in patient reported outcomes studies and economic evaluation studies.

참고문헌 (33)

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