The factor validity of the Western Ontario Rotator Cuff Index

Table 5 Descriptive statistics for WORC item and subscale scores

Item*	Item mean	Item SD	Subscale mean (SD)	Cronbach's alpha	Range of inter-item correlations within subscale
PS1	66	25.5	382 (121.7)	.81	.32 – .60
PS2	64	27.3
PS3	71	24.9
PS4	68	24.9
PS5	57	33.7
PS6	56	32.2
SR7	69	28.5	302 (81.8)	.72	.29 – .55
SR8	86	21.6
SR9	83	27.6
SR10	64	32.2
W11	65	25.7	296 (78.5)	.78	.38 – .64
W12	85	19.1
W13	77	24.4
W14	69	30.8
LS15	68	29.0	255 (96.3)	.82	.42 – .68
LS16	56	34.3
LS17	75	27.3
LS18	55	28.4
E19	77	27.1	196 (84.8)	.80	.52 – .70
E20	58	34.6
E21	62	37.7

ISSN: 1471-2474