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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)