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Table 1 Robson ten group delivery classification system

From: Analysis of cesarean section rates using Robson ten group classification system in a tertiary teaching hospital, Addis Ababa, Ethiopia: a cross-sectional study

Groups

Description

Group 1

Nulliparous, single cephalic,  37 weeks, in spontaneous labor

Group 2

Nulliparous, single cephalic,  37 weeks, induced or CS before labor

2a- Nulliparous, singleton, cephalic, ≥ 37 weeks’ gestation, induced labor.

2b- Nulliparous, singleton, cephalic, ≥ 37 weeks’ gestation, cesarean section before labor.

Group 3

Multiparous (excluding previous cesarean section), singleton, cephalic, ≥ 37 weeks’ gestation, in spontaneous labor.

Group 4

Multiparous without a previous uterine scar, with singleton, cephalic pregnancy, ≥ 37 weeks’ gestation, induced or cesarean section before labor.

4a- Multiparous without a previous uterine scar, with singleton, cephalic pregnancy, ≥ 37 weeks’ gestation, induced labor.

4b- Multiparous without a previous uterine scar, with singleton, cephalic pregnancy, ≥ 37 weeks’ gestation, cesarean section before labor.

Group 5

Previous cesarean section, singleton, cephalic, ≥ 37 weeks’ gestation.

Group 6

All nulliparous with a single breech.

Group 7

All multiparous with a single breech (including previous cesarean section).

Group 8

All multiple pregnancies (including previous cesarean section).

Group 9

All women with a single pregnancy in transverse or oblique lie (including those with previous cesarean section).

Group 10

All singleton, cephalic, < 37 weeks’ gestation pregnancies (including previous cesarean section).