Table 8 Model fitting statistics.

From: Epidemiological attribution of knee and ankle injuries in firefighters

Model fitting index

likelihood ratio test

McFadden R²

Cox & Snell R²

Nagelkerke R²

Hosmer-Lemeshow test

ROC curve AUC value (discrimination)

Classification accuracy (predictive accuracy)

Knee joint injury model (dependent variable: knee joint injury)

χ²=65.580, df = 15, p < 0.001

0.049

0.066

0.088

χ²=9.25, df = 8, p = 0.327

0.71(95%CI: 0.67–0.75)

72.3%(95%CI: 69.2%−75.4%)

Ankle joint injury model (dependent variable: ankle joint injury)

χ²=79.663, df = 15, p < 0.001

0.066

0.079

0.111

χ²=7.81, df = 8, p = 0.453

0.75(95%CI: 0.71–0.79)

76.5%(95%CI: 73.6%−79.4%)