Table 3.
Means and percentages of outcome variables in the full sample.
| Child outcomes | N | Mean | SD | Range | <1 SD (%) | <2 SD (%) |
|---|---|---|---|---|---|---|
| Bayley Scales of Infant and Toddler Development | ||||||
| Harmonized Mental Development Index (hMDI) | 1701 | 82.2 | 20.2 | 49–145 | 53% | 27% |
| N | Mean | SD | Range | T ≥65 (%) | T ≥70 (%) | |
| CBCL/1 ½−5 syndrome scales (raw scores) | ||||||
| Emotionally reactive | 1387 | 1.88 | 2.15 | 0–15 | 7.0% | 1.5% |
| Anxious/depressed | 1389 | 2.06 | 2.00 | 0–11 | 3.3% | 0.9% |
| Somatic complaints | 1389 | 1.58 | 1.95 | 0–14 | 8.1% | 3.4% |
| Withdrawn | 1389 | 1.53 | 2.01 | 0–14 | 8.9% | 5.5% |
| Sleep problems | 1390 | 2.41 | 2.61 | 0–14 | 5.3% | 3.3% |
| Attention problems | 1390 | 2.84 | 2.17 | 0–10 | 13% | 7.6% |
| Aggressive behaviors | 1372 | 8.37 | 6.20 | 0–29 | 5.0% | 1.9% |
| N | % | Range | ||||
| Diagnosis/Risk | ||||||
| Cerebral palsy diagnosis | 1477 | 12% | 0–1 | |||
| ASD, M-CHAT positive screen | 1809 | 19% | 0–1 |
ASD, autism spectrum disorder; CBCL/1 ½−5, Child Behavior Checklist for Ages 1½−5; M-CHAT, Modified Checklist for Autism in Toddlers.