Evaluation of Oxford instability shoulder score, Western Ontario shoulder instability Index and Euroqol in patients with slap (superior labral anterior posterior) lesions or recurrent anterior dislocations of the shoulder

Table 4 Agreement statistics and content validity for the domains of the EQ-5D 1.and 2.test

Outcome (scores)	Median (min. max.)	Limits of agreement (LoA)	Floor effects %	Ceiling effects %	Minimal detectable change (MDC) (95% CI)	ICC^†(95% CI)	Standard error of measurement (SEM_agreemen)
Walking	0.00 (0, 1)	(−0.30 to 0.35)	97.2	0.0	0.3 (0.2 to 0.4)	0.01 (−0.22 to 0.24)	0.2
Personal care	0.00 (0, 1)	(−0.63 to 0.61)	84.5	0.0	0.6 (0.4 to 0.8)	0.65 (0.49 to 0.77)	0.2
Daily activities	1.00 (0, 2)	(−0.85 to 1.04)	29.6	5.6	0.9 (0.6 to 1.2)	0.63 (0.47 to 0.75)	0.3
Pain/discomfort	1.00 (0, 2)	(− 0.73 to 0.81)	22.5	9.9	0.8 (0.5 to 1.1)	0.73 (0.60 to 0.82)	0.3
Anxiety/depression	0.00 (0, 1)	(−0.66 to 0.57)	79.1	0.0	0.6 (0.4 to 0.8)	0.75 (0.63 to 0.84)	0.2

ICC (2.1), interclass correlation version 2.1 for measuring correlation between test and retest. Agreement estimated by the difference between test and retest, minimal detectable change (MDC) with 95% confidence interval, limits of agreement (LoA), and standard error of measurement (SEM_agreemen). Content validity is measured by floor and ceiling effects.
95% CI (confidence interval) for paired t-test under null hypothesis = no difference between test and retest score.
^†p < 0,0001 for all ICC’s (interclass correlation coefficient version 2.1) except for the domain walking (p = 0.93).

ISSN: 1756-0500