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Table 1 Intra- and interobserver reliability measured by Cohen's κ

From: The association between hip fracture and hip osteoarthritis: A case-control study

Radiographic method Definition of disease positive Intra-observer reliability Inter-observer reliability
   Controls Fractured side Contralateral side Controls Fractured side Contralateral side
Minimum joint space ≤ 2.5 mm 0.94* 0.91 0.89 0.84 0.80 0.82
Kellgren and Lawrence ≥ grade 2 0.76* 0.93 0.56 0.67 0.63 0.50
  1. * Previously published results [21]