Groups | Definition of groups | |
1 | Nulliparous with single cephalic pregnancy, ≥37 weeks gestation in spontaneous labour | |
2 | Nulliparous with single cephalic pregnancy, ≥37 weeks gestation who either had labour induced or were delivered by CS before labour | |
3 | Multiparous without a previous uterine scar, with single cephalic pregnancy, ≥37 weeks gestation in spontaneous labour | |
4 | Multiparous without a previous uterine scar, with single cephalic pregnancy, ≥37 weeks gestation who either had labour induced or were delivered by CS before labour | |
5 | All multiparous with at least one previous uterine scar, with 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 uterine scars | |
8 | All women with multiple pregnancies including women with previous uterine scars | |
9 | All women with a single pregnancy with a transverse or oblique lie, including women with previous uterine scars | |
10 | All women with a single cephalic pregnancy ≥36 weeks gestation, including women with previous scars | |