Cross-cultural translation of the Lysholm knee score in Chinese and its validation in patients with anterior cruciate ligament injury

Table 3 Test-retest reliability and responsiveness of the C-LKS^a

Item	1st-Test (mean ± SD)^b	2nd-Test (mean ± SD)^b	3rd-Test (mean ± SD)^b	ICC (CI range)	ES	SRM
Overall scale	58.14 ± 15.25	57.98 ± 13.94	78.98 ± 10.36	0.935 (0.909–0.954)	1.36	1.26
Limp	3.27 ± 1.38	3.11 ± 1.38	4.43 ± 0.91	0.855 (0.797–0.896)	0.84	0.76
Locking	11.30 ± 4.27	11.04 ± 4.66	13.17 ± 3.93	0.770 (0.689–0.833)	0.44	0.32
Pain	13.13 ± 4.68	13.57 ± 4.33	17.62 ± 4.85	0.878 (0.830–0.913)	0.96	0.91
Stair climbing	4.89 ± 3.46	4.75 ± 3.82	9.10 ± 1.89	0.757 (0.672–0.804)	1.21	1.11
Support	3.98 ± 1.59	3.99 ± 1.56	4.95 ± 0.38	0.994 (0.991–0.995)	0.62	0.59
Instability	13.53 ± 4.15	13.45 ± 3.71	17.38 ± 4.23	0.936 (0.910–0.955)	0.93	0.89
Swelling	4.62 ± 3.05	4.70 ± 3.20	7.40 ± 2.90	0.813 (0.744–0.865)	0.91	0.84
Squatting	3.52 ± 1.32	3.37 ± 1.42	4.93 ± 0.26	0.768 (0.686–0.831)	1.07	1.04

ICC intra-class correlation coefficient, ES effect size; SRM: standardized response mean, CI 95 % confidence interval
^aThe sample size for the analysis of test-retest reliability and responsiveness was 126
^bThe 1st-Test was conducted at the beginning of this research, the 2nd-Test was conducted 1 week later to calculate the test-retest reliability (ICC) of the C-LKS, and the 3rd-Test was conducted 6 months later to calculate the responsiveness (ES, SRM) of the C-LKS

ISSN: 1471-2474