Table 1.
Prenatal, perinatal, and infant characteristics of cases and control subjects
| Variables | ASD (N = 950) |
Control (N = 764) |
P |
|---|---|---|---|
| Maternal and prenatal characteristics, N (%) | |||
| Mother’s age at birth (Years) | 28.0 (25.9, 30.0) | 28.0 (25.0, 30.3) | 0.812 |
| Parity number | 1 (1.2) | 1 (1.2) | <0.001 |
| Gravity number | 1 (1.1) | 1 (1.1) | 0.828 |
| Past miscarriage history | 315 (34.4) | 119 (18.1) | <0.001 |
| Threatened abortion | 127 (13.6) | 79 (10.6) | 0.072 |
| Labor and perinatal characteristics, N (%) | |||
| Cesarean section, Infant characteristics | 491 (51.7) | 301 (39.4) | <0.001 |
| Infant’s weight at birth (kg), Median (IQR) | 3.5 (3.2,3.9) | 3.4 (3.1,3.8) | 0.001 |
Bold values are statistically significant associations (p-value < 0.05)
ASD Autism spectrum disorder
Values are presented as median (IQR [interquartile range])