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Table 2 Change in episiotomy rates according to classification: Burgundy perinatal network data, vaginal deliveries, 2011–2016

From: A novel classification for evaluating episiotomy practices: application to the Burgundy perinatal network

Classification of episiotomy practices Episiotomy rates (%)
Pooled 2011–2016 2011 2012 2013 2014 2015 2016 P a Absolute Difference 2011–2016 Relative
Difference (%) 2011–2016
1 – Nulliparous women with a single cephalic pregnancy, at ≥37 weeks gestation, non-instrumental delivery 21.8 22.8 26.0 24.2 22.0 18.1 16.4 <  0.001 −6.4 −28.1
2 – Nulliparous women with a single cephalic pregnancy at ≥37 weeks gestation, instrumental delivery 40.9 46.8 46.1 45.4 40.7 34.7 33.0 <  0.001 −13.8 −29.5
 2a – Forceps/ spatula delivery 56.0 66.5 64.5 64.2 57.9 45.1 41.6 <  0.001 −24.9 −37.4
 2b – Vacuum delivery 30.2 33.9 32.2 32.5 29.6 27.4 25.8 <  0.001 −8.1 −23.9
3 – Multiparous women with a single cephalic pregnancy at ≥37 weeks gestation, non- instrumental delivery 6.2 7.8 7.2 6.4 5.9 5.1 4.5 <  0.001 −3.3 −42.3
4 – Multiparous women with a single cephalic pregnancy at ≥37 weeks gestation, instrumental delivery 26.8 33.5 31.4 32.1 23.6 21.3 21.5 <  0.001 −12.0 −35.8
 2a – Forceps/ spatula delivery 46.2 61.2 53.5 55.6 41.7 34.7 37.2 <  0.001 −24.0 −39.2
 2b – Vacuum delivery 17.8 23.1 18.7 22.1 16.0 14.9 13.6 <  0.001 −9.5 −41.2
5 – All women with a single cephalic pregnancy at < 37 weeks gestation 11.1 14.7 13.3 13.5 8.7 9.0 6.9 <  0.001 −7.8 − 53.1
6 – All women with a single breech pregnancy 17.7 21.8 16.6 15.1 21.4 15.7 16.4 0.24 −5.4 −24.8
7 – All women with multiple pregnancy 17.5 25.4 19.9 20.8 18.2 9.9 9.9 0.001 −15.5 −61.0
Total 15.5 17.8 17.8 16.7 15.0 12.9 12.1 <  0.001 −5.7 −32.0
  1. aCochran Armitage Test