The performance of the models I and II and the maternal severity score.

*The Hosmer-Lemeshow test indicates a poor fit if p value is less than 0.05.£The Nagelkerke R2 values the proportion of variance in maternal mortality associated with the models’ predictors. Higher R2 values, better model performance.@Area under the receiver operating characteristic curve with 95% confidence intervals calculated among women with life-threatening conditions of the subpopulation “B”.N.A.: not applicable.