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

Table 6

Comparison of internal consistency of the original KOOS and HK-KOOS ().

Original KOOS	Cronbach’s alpha	HK-KOOS	Cronbach’s alpha
Symptoms	0.82	Factor 1 (A9-A12, A14-A15, SP4)	0.93
Pain	0.92	Factor 2 (S1-S3, S6-S7, Q3)	0.84
ADL	0.96	Factor 3 (SP1-SP3, SP5, A5)	0.88
Sport and recreation	0.85	Factor 4 (A8, A16-A17, Q2, Q4, S5)	0.80
QoL	0.80	Factor 5 (P5, P9, A4, A6)	0.90
		Factor 6 (A1-A2, A7, P6, P4)	0.91
		Factor 7 (P3, P7-P8, A3, A13, S4, Q1)	0.86