Comparison of antenatal care and labour.

SD: standard deviation; GA: Gestational Age; WG: weeks of gestation; 1 Complete cure: 2 injections of corticosteroids at 24H interval; 2 Renewal of corticosteroid cure 7 days after the first cure; 3 Diagnosis if at least 2 signs among maternal hyperthermia up to 38°C, maternal or fetal tachycardia, uterine contractions and pelvic tenderness, CRP increase up to 20mg/l; 4 Difference of means, impact of rupture of membranes on the variable; * non interpretable.