Reliability and Validity of the Korean Western Ontario and McMaster Universities(WOMAC) Osteoarthritis Index in Patients with Osteoarthritis of the Knee

퇴행성 슬관절염 환자에 대한 한글판 WOMAC Index의 신뢰도와 타당성에 관한 연구

  • Ko, Tae-Sung (Dept. of Physical Therapy, Dae-Won University College) ;
  • Kim, Seong-Yeol (Dept. of Physical Therapy, Shin-Sung University) ;
  • Lee, Jong-Soo (Dept. of Oriental Rehabilitation Medicine, College of Oriental Medicine, Kyung-Hee University)
  • 고태성 (대원대학 물리치료학과) ;
  • 김성렬 (신성대학 물리치료학과) ;
  • 이종수 (경희대학교 한의과대학 한방재활의학과교실)
  • Received : 2009.03.17
  • Accepted : 2009.04.06
  • Published : 2009.04.30


Objectives : To investigate reliability and validity of Korean translation of Western Ontario and McMaster Universities(WOMAC) osteoarthritis index. Methods : The reliablity, construct validity of the Korean WOMAC Index in the patient of knee osteoarthritis was investigated. Test-retest reliability was quantified with pearson's correlation coefficient and intraclass correlation coefficient. Internal consistency was quantified with Cronbach's ${\alpha}$. and construct validity with pearson's correlation coefficient by correlating of the Visual Analog Scale(VAS). Results : Test-retest reliability of Korean WOMAC Index for pain was 0.76 to 0.95, stiffness was 0.89 to 0.94, and physical function was 0.71 to 0.95. Intraclass correlation coefficient for pain was 0.76 to 0.94, stiffness was 0.54 to 0.89, and physical function was 0.70 to 0.95. Internal consistency were 0.94 and 0.94 for the first and second time, respectively. Construct validity for pain was 0.79, for stiffness was 0.66, and physical function was 0.67. Conclusions : The Korean translation of Western Ontario and McMaster Universities(WOMAC) osteoarthritis index is reliable, valid assessment tool in knee osteoarthritis.


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