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Table 4 Contribution of each group by Robson's classification to the overall Caesarean section rate according to pre and post intervention period

From: Using a Caesarean Section Classification System based on characteristics of the population as a way of monitoring obstetric practice

Groups Contribution of each group to the overall CS rate %
  Pre intervention Post intervention
1. Nulliparous, single cephalic, ≥ 37 weeks, in spontaneous labour 6.2 5.7
  (41/664) (36/628)
2. Nulliparous, single cephalic, ≥ 37 weeks, induced or CS before labour 3.9 4.8
  (26/664) (30/628)
3. Multiparous (excluding prev. CS), single cephalic, ≥ 37 weeks, in spontaneous labour 6.6 5.6
  (44/664) (35/628)
4. Multiparous (excluding prev. CS), single cephalic, ≥ 37 weeks, induced or CS before labour 2.3 3.7
  (15/664) (23/628)
5. Previous CS, single cephalic, ≥ 37 weeks 16.6 14.9
  (110/664) (94/628)
6. All nulliparous breeches 1.4 1.3
  (9/664) (8/628)
7. All multiparous breeches (including prev. CS) 1.9 1.9
  (13/664) (12/628)
8. All multiple pregnancies (including prev. CS) 1.5 1.1
  (10/664) (7/628)
9. All abnormal lies (including prev. CS) 0.4 0.6
  (3/664) (4/628)
10. All single cephalic, ≤ 36 weeks (including prev. CS) 4.7 3.7
  (31/664) (23/628)
  1. χ2 = 5.3035 p = 0.8071