Cross-Cultural Adaptation and Validation of the Hong Kong Version of the Knee Injury and Osteoarthritis Outcome Score (HK-KOOS) for Patients with Knee Osteoarthritis.
Andy S K Cheng, Ka-Chun Chan, Sum-Yuet Chan and 5 others
PMID 31485200WHAT IT FOUND
The HK-KOOS gave reliable, culturally adapted self-report scores for knee osteoarthritis in Hong Kong.
It did not match the original questionnaire's grouping, and 20% of participants scored lowest in Sports/Rec.
Key findings
01The HK-KOOS showed good reliability and internal consistency, with test-retest ICC values from 0.76 to 0.86 and Cronbach's alpha values from 0.80 to 0.96.
02The HK-KOOS did not reproduce the original five-domain grouping; factor analysis found seven factors.
03No ceiling effect was seen, but 20% of participants scored lowest in Sports/Rec.
STILL TO COME
How it was doneWhat they foundWhat it means for OTs
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What it does not show
Participants were recruited by convenient sampling from two public hospitals, so the sample may not represent all people with knee osteoarthritis. The average age was 67.37 years, so results may not apply to younger patients with knee osteoarthritis or other knee problems. The factor analysis found seven factors rather than the original five domains, so the HK-KOOS may not be directly comparable with versions that use the original grouping. 20% of participants reached the lowest score in Sports/Rec, which may limit usefulness for older patients with severe activity limitations. The amount of score change needed to be confident of real change ranged from 3.86 to 12.06 points on a 0 to 100 scale, and this differed from other versions.
The easy way to misread this
Do not assume the HK-KOOS can be scored or interpreted exactly like the original five-domain KOOS. The factor analysis found seven factors, and 20% of participants scored lowest in Sports/Rec.