From: Cesarean delivery in Iran: a population-based analysis using the Robson classification system
Group | Obstetric Population |
---|---|
1 | Nulliparous women with a single cephalic pregnancy, ≥37 weeks gestation in spontaneous labour |
2 | Nulliparous women with a single cephalic pregnancy, ≥37 weeks gestation who had labour induced or were delivered by CS before labour |
2a | Labour induced |
2b | Pre-labour CS |
3 | Multiparous women without a previous CS, with a single cephalic pregnancy, ≥37 weeks gestation in spontaneous labour |
4 | Multiparous women without a previous CS, with a single cephalic pregnancy, ≥37 weeks gestation who had labour induced or were delivered by CS before labour |
4a | Labour induced |
4b | Pre-labour CS |
5 | All multiparous women with at least one previous CS, with a single cephalic pregnancy, ≥37 weeks gestation |
6 | All nulliparous women with a single breech pregnancy |
7 | All multiparous women with a single breech pregnancy including women with previous CS(s) |
8 | All women with multiple pregnancies including women with previous CS(s) |
9 | All women with a single pregnancy with a transverse or oblique lie, including women with previous CS(s) |
10 | All women with a single cephalic pregnancy < 37 weeks gestation, including women with previous CS(s) |