Table 4.

Significant predictors in the second stage of modelling

Predictor	SVM	C&R Tree	QUEST	RBF	MLP	Occurrence
Personal health level	√	√	√	√	√	5
Marital status	√	√	√	√	√	5
Social status	√	√	√	√	√	5
Dose of contraceptives used	√	√	√	√	√	5
Education level	√	√	√	√	√	5
Number of childbirths by caesarean	√	√	√	√	√	5
Age	√			√	√	3
Age at the first childbirth	√			√	√	3
Number of pregnancies	√			√	√	3
Immunodeficiency	√			√	√	3