Table 3.
Perinatal characteristics and some clinical features of participants.
| n (%) | ASD (n=119) | Controls(n=133) | p-value |
|---|---|---|---|
| Season of birth | 0.114 | ||
| Winter (December-February) | 23 (19.3) | 31 (23.3) | |
| Spring (March-May) | 29 (24.4) | 36 (27.1) | |
| Summer (June-August) | 45 (37.8) | 32 (24.1) | |
| Autumn (September-November) | 22 (18.5) | 34 (25.6) | |
| Birth type | 0.015 | ||
| Vaginal delivery | 84 (70.6) | 111 (83.5) | |
| Cesarean section | 35 (29.4) | 22 (16.5) | |
| Gestational age at birth | 0.149 | ||
| Preterm (34-37 weeks) | 21 (17.6) | 15 (11.3) | |
| Term (≥37 weeks) | 98 (82.4) | 118 (88.7) | |
| Birth weight | 0.277 | ||
| <2500 g | 19 (16) | 15 (11.3) | |
| ≥2500 g | 100 (84) | 118 (88.7) | |
| Birthplace | 0.965 | ||
| Hospital | 112 (94.1) | 125 (94) | |
| Others (house, car, etc.) | 7 (5.9) | 8 (6) | |
| Birth complication | 14 (11.8) | 8 (6) | 0.106 |
| Seizure/convulsion history | 42 (35.3) | 5 (3.8) | <0.001 |
ASD: Autism Spectrum Disorder.