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Table 7 The model’s performance to predict five shoulder pathologies

From: Critical shoulder angle combined with age predict five shoulder pathologies: a retrospective analysis of 1000 cases

OBSERVED

PREDICTED

Cuff tear arthropathy (CTA)

Osteoarthritis (OA)

Rotator cuff tears (RCT)

Impingement (IM)

Tendinitis calcarea (TC)

Cuff tear arthropathy (CTA)

71.5% (n = 143)

7.5% (n = 15)

18.5% (n = 37)

2.0% (n = 4)

0.5% (n = 1)

Osteoarthritis (OA)

7.5% (n = 15)

82.0% (n = 164)

0.5% (n = 1)

2.0% (n = 4)

8.0% (n = 16)

Rotator cuff tears (RCT)

22.5% (n = 45)

2.5% (n = 5)

47.5% (n = 95)

24.0% (n = 48)

3.5% (n = 7)

Impingement (IM)

6.0% (n = 12)

2.0% (n = 4)

23.0% (n = 46)

58.0% (n = 116)

11.0% (n = 22)

Tendinitis calcarea (TC)

0.0% (n = 0)

7.5% (n = 15)

0.0% (n = 0)

13.0% (n = 26)

79.5% (n = 159)

Sensitivity a

71.5%

82.0%

47.5%

58.0%

79.5%

Specificity b

72.8%

76.1%

71.6%

71.8%

75.4%

  1. aSensitivity correctly categorized (observed = predicted); bSpecificity correctly categorized (not observed = not predicted)