Table 2:
Infant Characteristics for Weighted Sample
| Mean, SD or Weighted (%) | |||||
|---|---|---|---|---|---|
| Total Sample | Very Preterm | Moderate/ Late Preterm | Full term | p | |
| Unweighted N | 8200 | 800 | 1500 | 5900 | |
| Gestational Age (weeks) | 38.5, 2.5 | 28.8, 3.1 | 35.0, 1.7 | 39.1, 1.6 | < .001 |
| Infant Fussiness/Difficulty | .79 | ||||
| Fussy | 63.5% | 65.5% | 64.2% | 63.3% | |
| Not Fussy | 36.5% | 34.5% | 35.8% | 36.7% | |
| Gender | .60 | ||||
| Male | 51.2% | 49.8% | 52.6% | 51.0% | |
| Female | 48.8% | 50.2% | 47.4% | 49.0% | |
| Birthweight (grams) | 3320.0, 408.4 | 1719.2, 2131.7 | 2806.1, 1005.0 | 3412.6, 392.8 | < .001 |
| Fetal Growth | .03 | ||||
| Small for gestational age (<10%) | 9.9% | 6.6% | 9.1% | 10.1% | |
| 5-Minute Apgar | < .001 | ||||
| >7 | 97.1% | 71.0% | 92.6% | 98.2% | |
| ≤ 7 | 2.9% | 29.0% | 7.4% | 1.8% | |
| 9-month Bayley Mental T-score | 50.1, 23.3 | 44.9, 22.5 | 46.8, 20.4 | 50.6, 19.5 | < .001 |
| Child Awakens ≥3 Times Nightly | |||||
| .04 | |||||
| No | 85.9% | 89.2% | 83.3% | 86.1% | |
| Yes | 14.1% | 10.8% | 16.7% | 13.9% | |