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. 2016 Sep 12;6(2):120–125. doi: 10.1055/s-0036-1592140

Table 2. Measures of interobserver agreement for grading of osteoarthritis on MRI and radiographs.

All patients SLAC SNAC
Kappa (kw) Interpretation Kappa (kw) Interpretation Kappa (kw) Interpretation
Radiographs First read 0.56 Moderate 0.52 Moderate 0.57 Moderate
Second read 0.54 Moderate 0.34 Fair 0.66 Substantial
MRI First reads 0.75 Substantial 0.62 Substantial 0.76 Substantial

Abbreviations: MRI, magnetic resonance imaging; SNAC, scaphoid nonunion advanced collapse; SLAC, scapholunate advanced collapse.