Table 1.

Robson 10-group classification system.

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.
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.
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).

CS = caesarean section.