Physical Therapy Korea (한국전문물리치료학회지)

Korean Research Society of Physical Therapy (한국전문물리치료학회)
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Reliability and Validity of the Neck Disability Index in Neck Pain Patients

경통 환자 평가를 위한 Neck Disability Index의 신뢰도와 타당도

  • Lee, Eun-Woo (Dept. of Physical Therapy, The Graduate School, Sahmyook University) ;
  • Shin, Won-Seob (Dept. of Physical Therapy, Kangbuk Samsung Medical Center) ;
  • Jung, Kyoung-Sim (Dept. of Physical Therapy, The Graduate School, Sahmyook University) ;
  • Chung, Yi-Jung (Dept. of Physical Therapy, College of Health Welfare, Sahmyook University)
  • 이은우 (삼육대학교 대학원 물리치료학과) ;
  • 신원섭 (강북삼성병원 물리치료실) ;
  • 정경심 (삼육대학교 대학원 물리치료학과) ;
  • 정이정 (삼육대학교 보건과학대학 물리치료학과)
  • Received : 2007.06.07
  • Accepted : 2007.08.10
  • Published : 2007.09.17
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Abstract

The purpose of this study was to determine reliability and validity of the Neck Disability Index (NDI) now in use for the first time in neck pain patients of Korea. Fifty subjects (26 males and24 female) with neck pain enrolled in the study. They completed a standardized self-administered questionnaire that include pain intensity, personal care, lifting, reading, headaches, concentration, work, driving, sleeping and recreation. Reliability was determined by intra-class correlation coefficient (ICC) and Cronbach's alpha by internal consistency. Validity was examined by correlating the NDI scores to the Visual Analog Scale (VAS) score. The Test-retest reliability of the translated versions of the NDI was good ICC (2,1) = .90 (95%CI .85 .95). Cronbach's alpha value for NDI was found to be .95 and this was statistically significant (p<.05). The criterion-related validity coefficients was .72 (p<.01). We conclude that the Korean version of NDI has shown to be a reliable and valid instrument for the assessment of neck pain.

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