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Table 1 The Ten-group classification system

From: Implementation of the Robson classification in clinical practice:Lithuania’s experience

Robson group Description of the group
1 Nulliparous women, single cephalic, >=37 weeks, in spontaneous labour
2 Nulliparous women, single cephalic, >=37 weeks, induced or CS before labour
3 Multiparous women (excluding prev. CS), single cephalic, >=37 weeks, in spontaneous labour
4 Multiparous women (excluding prev. CS), single cephalic, >=37 weeks, induced or CS before a labour
5 Previous CS, single cephalic, >=37 weeks
6 All nullipara breeches
7 All multipara breeches (including prev. CS)
8 All multiple pregnancies (including prev. CS)
9 All abnormal lies (including prev. CS)
10 All single cephalic, <=36 weeks (including prev. CS)