Predictor | Cases n (%) | Controls n (%) | Unadjusted OR (95% CI) | Adjusted OR (95% CI) | p-value for likelihood ratio test |
---|---|---|---|---|---|
Premature rupture of membranes | <0.001 | ||||
Yes | 52 (26) | 27 (7) | 4.9 (2.9-8.0) | 5.9 (3.5-9.9) | |
No | 148 (74) | 373 (93) | 1.0 | 1.0 | |
Dystocia | 0.01 | ||||
Yes | 42 (21) | 64 (16) | 1.4 (0.9-2.2) | 1.9 (1.2-3.1) | |
No | 158 (79) | 336 (84) | 1.0 | 1.0 | |
Pre-eclamspia | 0.44 | ||||
Yes | 13 (7) | 29 (7) | 1.0 (0.5-1.8) | 1.3 (0.7-2.7) | |
No | 187 (93) | 371 (93) | 1.0 | 1.0 | |
Haemorrhage | 0.02 | ||||
Yes | 17 (9) | 21 (5) | 1.7 (0.9-3.3) | 2.4 (1.2-4.7) | |
No | 183 (91) | 379 (95) | 1.0 | 1.0 | |
Other complications | 0.06 | ||||
Yes | 16 (8) | 22 (6) | 1.5 (0.8-2.9) | 2.0 (1.0-3.9) | |
No | 184 (92) | 378 (94) | 1.0 | 1.0 |