- The association between maternal outcomes and mothers age.
| Variables | Total | Mother age <40 years | Mother age ≥40 years | Fisher’s exact test | OR (95% CI) |
|---|---|---|---|---|---|
| n (%) | |||||
| Comorbidity | |||||
| None | 3460 (80.1) | 1995 (92.5) | 1465 (67.8) | <0.0001 | 0.170 (0.141-0.204) |
| Diabetes mellitus | 553 (12.8) | 159 (7.4) | 394 (18.2) | <0.0001 | 2.799 (2.303-3.401) |
| Hypertension | 33 (6.9) | 14 (0.5) | 285 (13.2) | <0.0001 | 23.325 (13.59-40.028) |
| Antepartum hemorrhage | 49 (1.1) | - | 49 (2.3) | - | - |
| Membrane | |||||
| None | 3996 (92.5) | 2039 (94.6) | 1957 (90.5) | <0.0001 | 0.548 (0.433-0.693) |
| PROM | 156 (3.6) | 39 (1.8) | 117 (5.4) | <0.0001 | 3.106 (2.151-4.485) |
| SROM | 127 (2.9) | 39 (1.8) | 88 (4.1) | <0.0001 | 2.030 (1.572-3.374) |
| ARM | 39 (0.9) | 39 (1.8) | - | - | - |
| Amniotic fluid | |||||
| Clear | 3917 (90.7) | 2029 (94.1) | 1888 (87.3) | <0.0001 | 0.431 (0.346-0.537) |
| Meconium | 401 (9.3) | 127 (5.9) | 274 (12.7) | <0.0001 | 2.319 (1.862-2.888) |
| Delivery outcomes | |||||
| Spontaneous vaginal delivery | 3399 (78.7) | 1789 (83.0) | 1610 (74.5) | <0.0001 | 0.598 (0.516-0.694) |
| Instrument | 32 (0.7) | 31 (1.4) | 1 (0.01) | <0.0001 | 0.032 (0.004-0.233) |
| Caesarian section | 887 (20.5) | 336 (15.6) | 551 (25.5) | <0.0001 | 1.853 (1.592-2.155) |
| Total duration of labor | |||||
| N/A | 626 (14.5) | 237 (11.0) | 389 (18.0) | <0.0001 | 1.777 (1.493-2.114) |
| <6 hours | 2252 (52.2) | 975 (45.2) | 1277 (59.1) | <0.0001 | 1.748 (1.549-1.972) |
| 6-12 hours | 1405 (32.5) | 938 (43.5) | 467 (21.6) | <0.0001 | 0.358 (0.313-0.409) |
| 13-20 hours | 35 (0.8) | 6 (0.3) | 29 (1.3) | <0.0001 | 4.872 (2.019-11.758) |
| Post-partum complications | |||||
| None | 4236 (98.1) | 2137 (99.1) | 2099 (97.1) | 0.599 | 0.296 (0.177-0.497) |
| Post-partum hemorrhage | 67 (1.6) | 4 (0.2) | 63 (2.9) | <0.0001 | 16.148 (5.867-44.442) |
| Retained placenta | 21 (0.5) | 15 (0.7) | 6 (0.3) | 0.050 | 0.397 (0.154-1.026) |
The values presented as number and percentages (%). Fisher’s extract test utilized to see whether there was a significant difference between groups. PROM: premature rupture of amniotic membrane, SRAM: spontaneous rupture of membranes, ARM: artificial rupture of the membrane, OR: odds ratio, CI: confidence interval, N/A: not available