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Table 4 Percentage of agreement (PA) and Cohen’s Kappa coefficient with 95% confidence interval for accuracy, defined as SFR classification compared with gold standard classification (GS) for all humerus fractures

From: Validity of humerus fracture classification in the Swedish fracture register

 

Accuracy

 

SFR vs GS

 

PA

Kappa (95% CI)

AO/OTA group (4 signs)

61%

0.57 (0.47-0.67)

AO/OTA type (3 signs)

75%

0.66 (0.55-0.76)

  1. AO/OTA group – 4 signs refer to a full AO/OTA classification with 4 signs e.g. 11A1. AO/OTA type – 3 signs refer to a simplified AO/OTA classification with 3 signs only e.g. 11A
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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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