Group | Classification |
1 | Nulliparous, single cephalic, ≥37 weeks in spontaneous labour |
2 | Nulliparous, single cephalic, ≥37 weeks induced (including prelabour SC) |
3 | Multiparous, single cephalic, ≥37 weeks, (excluding SC), in spontaneous labour |
4 | Multiparous, single cephalic, ≥37 weeks, induced labour or SC before labour |
5 | Multiparous, single cephalic, ≥37 weeks, previous CS |
6 | All nuliparous breech |
7 | All multiparous breech (including previous CS) |
8 | All multiple pregnancies (including previous CS) |
9 | All transverse or oblique lie (including previous CS) |
10 | All preterm single cephalic, ≤37 weeks (including previous CS) |