Table 1. The Robson classification of women for cesarean sections.

[10]

Group	Description
1	Nulliparous, single cephalic, ≥37 weeks, in spontaneous labor
2	Nulliparous, single cephalic, ≥37 weeks, induced or cesarean before labor
3	Multiparous (excluding previous cesarean), single cephalic, ≥37 weeks, in spontaneous labor
4	Multiparous (excluding previous cesarean), single cephalic, ≥37 weeks, induced or cesarean before labor
5	Previous cesarean, single cephalic, ≥37 weeks
6	All nulliparous breeches
7	All multiparous breeches (including previous cesarean sections)
8	All multiple pregnancies (including previous cesarean sections)
9	All abnormal lie presentations (including previous cesarean section)
10	All single cephalic, <37 weeks (including previous cesarean section)