Table 3.

Association between age and complications (uni and multivariate analysis).

	Univariate OR [IC 95%] (p-value)	Multivariate** OR ajusté [IC 95%] (p-value)
Preeclampsia	3.10 [2.04; 4.71] (<0.0001)	2.46 [1.58; 3.81] (<0.0001)
Gestational diabetes	2.30 [1.85; 2.85] (<0.0001)	2.49 [1.61; 3.85] (<0.0001)
Gestational hypertension	2.98 [1.81; 4.91] (<0.0001)	2.59 [1.57; 4.30] (0.0002)
Preterm birth <37SA	1.68 [1.34; 2.11] (<0.0001)	1.55 [1.19; 2.02] (0.0010)
Cesarean	2.35 [2.03; 2.71] (<0.0001)	2.07 [1.78; 2.42] (<0.0001)
Fetal death in utero	4.31 [2.16; 8.60] (<0,0001)	4,59 [2.20; 9.55] (<0,0001)

Selection of variables p ≤ 0.15

^**Stepwise model (input threshold 0.15, output threshold 0.05) Note: the multivariate model was performed on 3,821 pregnancies (143 missing data).