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KMID : 0357220070190050029
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Journal of Korean Society Physical Therapy
2007 Volume.19 No. 5 p.29 ~ p.41
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Validity and Reliability on Psychometric Arthritis Impact Measurement Scale-Short Form (AIMS-SF) in Knee Osteoarthritis Patients
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Yi Seung-Ju
Nam Tae-Ho
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Abstract
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Purpose: The aim of this study was to examine the validity and reliability on Psychometric Arthritis Impact Measurement Scale-Short Form (AIMS-SF) in patients with knee osteoarthritis(OA).
Methods: The sample consisted of 62 patients who had received physical therapy at the physical therapy units of the Andong Medical Center, Sungso Hospital, Ahn Orthopedic Surgery Clinic, and St. Luke Clinic in Andong city in June 2006. Questionnaire on the AIMS-SF was recruited by 5 physical therapists. The internal structure and reliability of the scales were evaluated by means of item-internal consistency(Cronbach’s alpha coefficient: ), item-discriminant validity, Pearson’s relation coefficient. To explore construct validity we conducted a principal component factor analysis with varimax rotation analysis. The criterion for factor extraction was an eigenvalue >1.0.
Results: 62 OA patients’s an average deviation was years (range: yr). The internal consistency reliability of 11 items, as estimated by Cronbach’s coefficient, was high ranging (except for 0.40 for mobility level and -0.48 for mood). The internal consistency reliability of item-each scale was also high (except for 0.48 for mood). Of 11 items, the item-discriminant validity on 6 items was high ( coefficient range: ), however, others (0.57 for tension level, 0.48 for arthritis pain, 0.41 for walking and bending, and 0.40 for work) were a little low. The construct validity by factor analysis was a little low.
Conclusion: In conclusion, the results reported here confirm the validity and reliability of the AIMS-SF in patients with OA of the knee. The Collection of information on health status using this instrument was acceptable to patients. A further prospective multi-center study will be necessary to prove the construct validity.
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KEYWORD
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AIMS-SF, Validity, Reliability, Osteoarthritis
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