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Table 2 Profiles of cesarean delivery according to maternal origin using the Robson classification

From: Differential rates of cesarean delivery by maternal geographical origin: a cohort study in France

Robson categorya Number of CDs / number ofwomen in each category Size of each category (%)
(number of women in each category divided by the total number of women)
CD rate in each category (%)
(number of cesarean deliveries in the category divided by the number of women in the category)
Contribution of each category (%)
(number of cesarean deliveries in each category divided by the total number of women)
SSA group Fr group SSA group Fr group Difference (SSA-Fr) SSA group Fr group Difference (SSA-Fr) SSA group Fr group Difference (SSA-Fr)
1 26/193 64/737 12.9 33.5 −20.6 13.5 8.7 4.8 1.7 2.9 −1.2
2A 48/131 79/283 8.8 12.9 −4.1 36.6 27.9 8.7 3.2 3.6 −0.4
2B 7/7 16/16 0.5 0.7 −0.3 100.0 100.0 0.0 0.5 0.7 −0.3
1 + 2A + 2B 81/331 159/1036 22.2 47.1 −24.9 24.5 15.3 9.1 5.4 7.2 −1.8
3 27/486 7/526 32.6 23.9 8.7 5.6 1.3 4.2 1.8 0.3 1.5
4A 26/163 12/156 10.9 7.1 3.8 16 7.7 8.3 1.7 0.5 1.2
4B 17/17 9/9 1.1 0.4 0.7 100.0 100.0 0.0 1.1 0.4 0.7
3 + 4A + 4B 70/666 28/691 44.7 31.4 13.2 10.5 4.1 6.5 4.7 1.3 3.4
5A 99/193 41/125 13.0 5.7 7.3 51.3 32.8 18.5 6.6 1.9 4.8
5B 80/88 21/25 5.9 1.1 4.8 90.9 84.0 6.9 5.4 1.0 4.4
5A + 5B 181/284 63/152 19.0 6.9 12.1 63.7 41.4 22.3 12.1 2.9 9.3
6 7/8 41/61 0.5 2.8 −2.2 87.5 67.2 20.3 0.5 1.9 −1.4
7 29/33 17/34 2.2 1.5 0.7 87.9 50.0 37.9 1.9 0.8 1.2
8 36/60 26/78 4.0 3.5 0.5 60.0 33.3 26.7 2.4 1.2 1.2
9 10/11 2/2 0.7 0.1 0.6 90.9 100.0 −9.1 0.7 0.1 0.6
10 40/98 34/144 6.6 6.6 0.0 40.8 23.6 17.2 2.7 1.5 1.1
Total 458/1491b 370/2198b     30.7 16.8 13.9    
  1. Abbreviations: SSA group women born in and originally from Sub-Saharan Africa, Fr group women born in and originally from mainland France, CD cesarean delivery
  2. aDescription of each category of Robson classification: 1 = Nulliparous, single cephalic, ≥37 weeks, spontaneous labor, 2 = Nulliparous, single cephalic, ≥37 weeks; 2A = induced - 2B = cesarean before labor, 3 = Multiparous (excluding previous uterine scar), single cephalic, ≥37 weeks, spontaneous labor, 4 = Multiparous (excluding previous uterine scar), single cephalic, ≥37 weeks; 4A = induced - 4B = cesarean before labor, 5A = One previous uterine scar, single cephalic, ≥37 weeks - 5B = More than one previous uterine scar, single cephalic, ≥37 weeks, 6 = All nulliparous breeches, 7 = All multiparous breeches (including previous uterine scar), 8 = All multiple pregnancies (including previous uterine scar), 9 = All abnormal lies (including previous uterine scar), 10 = All single cephalic, ≤ 36 weeks (including previous uterine scar)
  3. bMissing data prevented the determination of the Robson category for 9 women of SSA group and 8 women of Fr Group