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Table 2 Inter-item total statistics

From: Spanish version of SPADI (shoulder pain and disability index) in musculoskeletal shoulder pain: a new 10-items version after confirmatory factor analysis

  Scale mean if item deleted Scale variance if item deleted Corrected item-total correlation Squared multiple correlation Cronbach's alpha if item deleted
SPADI2 49,85 424,696 .515 .430 .908
SPADI3 49,53 415,248 .678 .603 .899
SPADI4 50,78 398,164 .724 .600 .896
SPADI5 50,39 404,958 .650 .520 .900
SPADI6 51,25 383,372 .754 .633 .894
SPADI7 49,19 408,582 .671 .527 .899
SPADI8 50,89 397,198 .755 .630 .894
SPADI9 53,35 403,221 .644 .562 .901
SPADI10 53,21 397,261 .687 .587 .898
SPADI13 51,18 393,603 .636 .426 .902