| Characteristic | GBS Positive N (%) | GBS Negative N (%) | Statistics Chi/Fischer | p value |
| Previous PROM Yes No |
0 (0.0) 7 (4.0) |
8 (100.0) 170 (96.0) | 0.329 | 0.566 |
| Previous Preterm Delivery Yes No |
0 (0.0) 7 (4.0) |
8 (100.0) 170 (96.0) | 0.329 | 0.566 |
| Previous Stillbirth Yes No |
0 (0.0) 7 (4.0) |
5 (100.0) 173 (96.0) | 0.202 | 0.653 |