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. 2014 Mar 27;49(2):174–177. doi: 10.1016/j.rboe.2014.03.016

Table 1.

Interobserver concordance using radiography and CT examinations with the Neer and AO classification systems.

Examination Classification Kappa
Radiography Neer 0.37
AO 0.25



Tomography Neer 0.57
AO 0.36