- Sociodemographic characteristics in relation to maternal age (N=4318).
| Characteristics | Total | Mother age <40 years | Mother age ≥40 years | Fisher’s exact test | OR (95% CI) |
|---|---|---|---|---|---|
| Nationality | |||||
| Saudi | 2302 (53.9) | 1265 (58.7) | 1037 (48.1) | <0.0001 | 0.625 (0.554-0.705) |
| Non-Saudi | 1972 (46.1) | 853 (40.3) | 1119 (51.9) | <0.0001 | 1.600 (1.418-1.806) |
| Mother’s weight | |||||
| 40-59 kg | 254 (10.6) | 218 (19.2) | 36 (2.9) | <0.0001 | 0.124 (0.086-0.179) |
| 60-79 kg | 944 (39.4) | 461 (40.5) | 483 (38.4) | 0.295 | 0.914 (0.776-1.077) |
| 80-99 kg | 1061 (44.3) | 376 (33.1) | 685 (54.5) | <0.0001 | 2.420 (2.049-2.857) |
| >100 kg | 136 (5.7) | 82 (7.2) | 54 (4.3) | 0.003 | 0.577 (0.405-0.822) |
| Age groups | |||||
| <40 years | 2156 (49.9) | 2156 (100) | - | <0.0001 | - |
| ≥40 years | 2162 (50.1) | - | 2162 (100) | - | - |
| 40-42 years | 1020 (23.8) | - | 1076 (49.8) | - | - |
| 43-45 years | 718 (16.7) | - | 718 (33.2) | - | - |
| >45 years | 368 (8.6) | - | 368 (17.0) | - | - |
The values presented as number and percentages (%). Fisher’s extract test utilized to see whether there was a significant difference between groups. OR: odds ratio, CI: confidence interval