| Variables | Categories | Complications N = 37 n (%) | no complications N = 29 n (%) | OR (95% CI) | P |
| Infectious disease during pregnancy | Malaria | 13 (35.1) | 8 (27.6) | 1.8 (0.18 - 1.82) | 0.8 |
| Pyelonephritis | 1 (2.7) | 0 (0.0) | - | …….. | |
| Cystitis | 0 (0.0) | 1 (3.4) | - | 0.99 | |
| Non-infectious diseases | Threatened STP | 1 (2.7) | 1 (3.4) | 1.21 (6.6 - 22.3) | 0.00 |
| PRM | 1 (3.4) | 0 (0.0) | - | ……. | |
| Diabetes | 0 (0.0) | 1 (3.4) | 1.47 | 0.99 | |
| PTL | 2 (5.4) | 0 (0.0) | - | 1 | |
| None | 19 (51.4) | 18 (62.0) | - | ……. | |
| Timing of diagnosis of twining | Before labor | 32 (48.4) | 28 (42.4) | 0.46 (0.01 - 11.52) | 0.64 |
| During labor | 5 (7.6) | 1 (1.6) | - | 0.03 |