Cross-cultural adaptation, validity, reliability and responsiveness of the Japanese version of the Victorian Institute of sports assessment for patellar tendinopathy (VISA-P-J)

Table 2 Measurement property of the VISA-P-J

	VISA-P-J
ICC (95% CI)	0.87 (0.78–0.93) **
Baseline, mean (95% CI)	74.3 (69.0–79.5)
1 week, mean (95% CI)	74.0 (68.4–79.5)
12 weeks, mean (95% CI)	77.1 (71.8–82.5)
Time interval (Baseline–1 week), mean days (95% CI)	7.0 (6.8–7.1)
SEM	0.89
Cronbach’s alpha (95% CI)	0.81 (0.71–0.88)
Correlation with the VISA-P-J
Roel's classification, r	− 0.52 **
VAS-ADL, r	− 0.66 **
VAS-Sports, r	− 0.86 **
Correlation with amount of change of the VISA-P-J (Baseline–12 weeks)
Amount of change of the VAS-ADL, r	− 0.52 **
Amount of change of the VAS-Sports, r	− 0.76 **
Floor effects (%)	0
Ceiling effects (%)	14.0
MCID	7

VISA-P-J Japanese version of the Victorian Institute of sports assessment scale for patellar tendinopathy; ICC intraclass correlation coefficient; SEM, standard error of measurement; VAS-ADL visual analog scale—activities of daily living; VAS-Sports, visual analog scale—sports; PGIC patient global impression of change; MCID minimal clinically important difference. 95% CI 95% confidence interval
**p < 0.01

ISSN: 2052-1847