하지의 근골격계 기능장애 환자들을 위한 한국어 판 Lower Extremity Functional Scale의 신뢰도와 타당도
Reliability and Validity of the Korean version of Lower Extremity Functional Scale in patients with lower-extremity musculoskeletal dysfunction
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초록
본 연구의 목적은 Lower Extremity Functional Scale(LEFS)를 한국어로 번안하여 검사-재검사간의 신뢰도 및 기준관련 타당도를 검증하는 것이다. 본 연구에서 하지의 근골격계 기능장애가 있는 44명의 환자가 참가하였다. 집안일, 취미생활, 욕조에 들어가거나 나오기, 걷기, 신발이나 양말신기, 쪼그려 앉기, 물건 들어올리기, 쉽거나 어려운 집안일하기, 차에 타고 내리기, 계단 오르고 내리기, 1시간 동안 바닥에 앉아있기, 또는 한시간 동안 서있기, 급회전하기, 뛰기, 침대에서 돌아눕기 등을 포함하는 자가보고형식의 설문지를 작성하였다. 신뢰도는 급간내 상관계수(ICC2,1)를 이용하였고, 내적일치도는 크론바 알파값을 이용하였다. SF-36의 신체기능점수, 신체건강점수, 통증점수, 정신건강점수의 결과를 상호 연관하여 기준관련 타당도를 검사하였다. 검사-재검사간 신뢰도는 .98로 높은 신뢰도를 나타내었으며, 내적 일치도는 크론바 알파 .96으로 높게 나타났다. LEFS는 SF-36의 신체기능, 신체 건강점수, 통증점수와 유의한 상관관계가 있었고, SF-36의 정신건강점수와는 유의하게 높은 상관관계를 나타내었다. 한국어판 LEFS는 신뢰도와 다른 기능을 평가하는 척도와 높은 타당도가 있음을 알 수 있었다. 따라서 한국어판 LEFS는 하지근골격계 기능장애 환자의 기능 상태를 평가하기 위한 유용한 임상 도구이다.
Abstract
The purpose of this study was to establish reliability and validity of the Lower Extremity Functional Scale (LEFS) translated into Korean for people with lower extremity musculoskeletal dysfunction. Forty-four subjects (21 males, 23 female) with lower-extremity musculoskeletal dysfunction enrolled in the study. They completed a standardized, self-administered questionnaire that included usual work, hobbies, getting into or out of the bath, walking, putting on your shoes, squatting, lifting on object, light or heavy activities around home, getting into or out of a car, going up or down stair, standing or sitting for 1 hour, running, sharp turns while running fast, hopping, rolling over in bed. Reliability was determined by intraclass correlation coefficient (ICC) and Cronbach’s alpha by internal consistency. Validity was examined by correlating the LEFS scores to the SF-36 scores. Test-retest reliability of the translated versions of the LEFS was excellent ICC(2,1)=.98(95%CI=.85~.95). Cronbach’s alpha value for LFES was found to be .96 and this was statistically significant (p<.01). The correlations between the LEFS and the SF-36 physical function subscale and physical component score were .65, and .63(p<.01), respectively. There was a higher correlation between the LEFS and mental component score were .75(p<.01). We concluded that the Korean version LEFS was shown to be a reliable and valid instrument for the assessment of lower-extremity musculoskeletal dysfunction.
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