marginally significantP = 0.081
The predictive power of the resulting model was poor (concordance = 0.573 ± 0.029 SE, Wald test: t = 5.09, df = 4, P = 0.3), and only female age among the predictor variables was marginally significant ( P = 0.081), suggesting that the risk of FEPC might decline as females got older (HR = 0.893, 95% CI: 0.786 to 1.014).