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Table 2 Inter-observer reliability of physical examination tests in patients diagnosed as acute soft tissue shoulder injury

From: Interrater reliability of physical examination tests in the acute phase of shoulder injuries

Test

Valid N

Cohen’s Kappa (95% CI)

Agreement

%

Inability to abduct > 90°a

42

0.90 (0.77–1.03)

95%

Painful arc

42

0.56 (0.36–0.76)

70%

Abduction strength

47

0.82 (0.64–0.99)

91%

Resisted abduction pain

48

0.50 (0.25–0.74)

75%

Hawkins` test

45

0.25 (0.01–0.48)

72%

External rotation reduced by ≥20°a

40

0.68 (0.42–0.93)

88%

External rotation strength

48

0.70 (0.48–0.92)

88%

Small finger test

48

0.51 (0.24–0.79)

81%

External rotation lag sign

39

0.40 (0.07–0.74)

89%

Belly-Press

45

0.63 (0.25–1.01)

93%

Internal rotation lag sign ¤

48

1 (1.00–1.00)

100%

Internal rotation lag sign anteriorly b

46

96%

  

Linear weighted kappa (95% CI)

 

Internal rotation AROM (4 levels)

48

0.52 (0.29–0.74)

NA

  1. aDerived from registered number of degrees of active range of motion; ¤ In 2 patients the first examiner registered “positive” and the second “not possible”; b The second assessors did not register any positive test