TABLE 3.
Mean (SE) and Group Differences: Developmental Outcomes by Gestational Age Groups
| Late Preterm (34–36 wk) | Early Term (37–38 wk) | Term (39–41 wk) | F | P | |
|---|---|---|---|---|---|
| BSF-R (9 mo) T score | 47.31a (0.53) | 49.12b (0.44) | 50.09c (0.32) | 13.97 | <.0001 |
| BSF-R (24 mo) T score | 46.10a (1.01) | 45.59a (0.86) | 45.81a (0.80) | 0.41 | .66 |
| Preschool reading (Θ score) | −0.52a (0.03) | −0.46a,b (0.03) | −0.42b (0.02) | 9.44 | .0002 |
| Preschool math (Θ score) | −0.54a (0.04) | −0.45a,b (0.02) | −0.41b (0.02) | 7.07 | .0014 |
| Kindergarten reading (Θ score) | 0.40a (0.04) | 0.51b (0.03) | 0.54b (0.03) | 6.33 | .0027 |
| Kindergarten math (Θ score) | 0.30a (0.06) | 0.31a (0.07) | 0.32a (0.07) | 0.22 | .81 |
All analyses adjusted for maternal age, maternal race or ethnicity, socioeconomic status at 9 mo, parenting, infant gender, birth weight, and receipt of early intervention services. Analyses at preschool and kindergarten also included age at assessment and month of school. Superscripts a, b, and c that differ from one another denote significant differences (P < .05) between late preterm, early term, and term infants at each timepoint.