Variables—n (n%)

2011-2012

201-2016

*p1

*p2

*p3

Total

N = 2043

Episiotomy

n = 1214

No Episiotomy

n = 829

Total

n = 2225

Episiotomy

n = 983

No Episiotomy

n = 1242

Premature membrane rupture

Yes

No

440 (21.5)

1603 (78.5)

254 (20.9)

960 (79.1)

186 (22.40

643 (77.6)

468 (21.0)

1757 (79.0)

236 (24.0)

747 (76.0)

232 (18.7)

1010 (81.3)

0.688

0.091

0.017

Labour Induction

Yes

No

611 (29.9)

1432 (70.1)

380 (31.3)

834 (68.7)

231 (27.9)

598 (72.1)

632 (28.4)

1593 (71.6)

207 (31.2)

676 (68.8)

325 (26.2)

917 (73.8)

0.280

0.001

0.013

Oxytocinaugmentation

Yes

564 (37.7)

398 (46.1)

166 (26.1)

619 (36.4)

328 (45.6)

291 (29.6)

0.454

≤0.0001

≤0.0001

Labour Analgesia

Yes

No

588 (28.8)

1454 (71.2)

458 (37.8)

755 (62.2)

130 (15.7)

699 (84.3)

465 (20.9)

1760 (79.1)

308 (31.3)

675 (68.7)

157 (12.6)

1085 (87.4)

≤0.0001

≤0.0001

≤0.0001