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 |