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Table 1 The 10-Group Classification System

From: Association between epidural analgesia and indications for intrapartum caesarean delivery in group 1 of the 10-group classification system at a tertiary maternity hospital, Shanghai, China: a retrospective cohort study

Group 1 Nulliparous, single cephalic, ≥37 weeks, spontaneous labour
Group 2 Nulliparous, single cephalic, ≥37 weeks, induced or CD before labour
Group 3 Multiparous (excluding previous CD), single cephalic, ≥37 weeks, spontaneous labour
Group 4 Multiparous (excluding previous CD), single cephalic, ≥37 weeks, induced or CD before labour
Group 5 Previous CD, single cephalic, ≥37 weeks
Group 6 All nulliparous breeches
Group 7 All multiparous breeches (including previous CD)
Group 8 All multiple pregnancies (including previous CD)
Group 9 All abnormal lies (including previous CD)
Group 10 All single cephalic, ≤36 weeks (including previous CD)
  1. Abbreviation: CD caesarean delivery