Table 3

Level of agreement in predicting ultimate management

PredictorsKappa coefficient (95% CI)Interpretation of level of agreement
Final radiographic report0.62 (0.30 to 0.94)Good
Clinicians’ predictions on the presence of fracture0.67 (0.36 to 0.98)Good
Clinicians’ predictions of ultimate management0.88 (0.64 to 1)Excellent
  • Guidelines for interpreting agreement by κ coefficient values have created arbitrary divisions. We have chosen, considering the subjective nature of our study, higher agreement levels: poor (κ≤0.40), fair (κ=0.41–0.60), good (κ=0.61–0.75)  and excellent (κ>0.75).14