Table 9.
Means, standard deviations, valid N, and T-tests of multiple problems by category.
| Problem area | SPD M (SD) (N) | ASD M (SD) (N) | t (p) |
|---|---|---|---|
| Pre-natal/pregnancy problems | 0.68 (0.882) (997) | 0.66 (0.910) (462) | 0.476 (0.634) |
| Delivery complications | 0.37 (0.613) (992) | 0.36 (0.597) (449) | 0.171 (0.864) |
| Assisted delivery methods | 0.39 (0.567) (993) | 0.43 (0.571) (449) | −1.366 (0.172) |
| Gestational age and birth weight | 0.25 (0.508) (992) | 0.40 (0.620) (457) | −4.768 (<0.001) |
| Birth-related injuries and illnesses | 0.50 (0.697) (993) | 0.52 (0.728) (458) | −0.954 (0.340) |
| Early childhood illnesses and injuries | 1.5 (1.15) (998) | 1.7 (1.14) (464) | −2.269 (0.023) |
| Infancy and early childhood developmental problems | 2.0 (1.61) (645) | 2.2 (1.74) (465) | −1.876 (0.061) |
| Early childhood developmental milestones | 1.2 (1.37) (629) | 1.7 (1.40) (459) | −6.091 (<0.001) |
| All problems | 7.5 (3.63) (622) | 8.1 (3.90) (445) | −2.440 (0.015) |