Use of Forceps

Yes

No

83 (4.1)

1960 (95.9)

83 (6.8)

1131 (93.2)

0 (0.0)

829 (100.0)

80 (3.6)

2145 (96.4)

79 (8.0)

904 (92.0)

1 (0.1)

1241 (99.9)

0.426

≤0.0001

≤0.0001

Grade of laceration

Third degree injury

Fourth degree injury

9 (1.5)

2 (0.3)

4 (5.3)

1 (1.3)

5 (1.0)

1 (0.2)

31 (3.3)

0 (0.0)

10 (14.1)

0 (0.0)

21 (2.4)

0 (0.0)

0.034

0.074

≤0.0001

0.050

≤0.0001

0.128