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