Table 4 Risk of caesarean section among women induced according to the Grenoble classification
Risk of caesarean section | 2014–2017 | 2018–2021 | Unadjusted OR | 95% CI | aOR* | 95% CI |
|---|---|---|---|---|---|---|
Group 1: Multiple pregnancies | 40.9 | 28.9 | 0.6 | [0.4; 0.8] | 0.6 | [0.4; 0,9] |
Group 2: Single breech pregnancy | 63.9 | 48.4 | 0.5 | [0.2; 1.2] | 0.5 | [0,2; 1,4] |
Group 3: Preterm single cephalic pregnancy (term less than 37 WG) | 34.0 | 35.7 | 1.1 | [0.8; 1.5] | 0.9 | [0,6; 1.3] |
Group 4: Single cephalic pregnancy with prelabor rupture of membranes at term (37 WG and above) | 22.4 | 21.2 | 0.9 | [0.7; 1.2] | 1.0 | [0,8; 1,2] |
Group 5: Single cephalic pregnancy, late term and post term (41 WG and over), intact membranes | 28.0 | 27.3 | 1.0 | [0.8; 1.2] | 1.0 | [0.9; 1,2] |
Group 6: Single cephalic pregnancy, term between 37 and 40 weeks, 6 days with maternal pathology indicating induction, intact membranes | 30.1 | 23.0 | 0.7 | [0.6; 0.8] | 0.8 | [0,6; 0,9] |
Group 7: Single cephalic pregnancy, term between 37 and 40 weeks, 6 days with fetal pathology indicating induction, intact membranes | 32.0 | 25.9 | 0.7 | [0.5; 1.0] | 0.8 | [0,6; 1,1] |
Group 8: Single cephalic pregnancy, term between 37 and 40 weeks, 6 days, induced without medical indication, intact membranes | 14.2 | 11.1 | 0.8 | [0.5; 1.2] | 0.8 | [0.5; 1,4] |
TOTAL | 27.8 | 24.2 | 0.8 | [0.8; 0.9] | 0.9 | [0,8; 0,9] |