TABLE 5

Multivariate Regression Analysis of Verbal and FSIQ Among Preterm Children

Variables in ModelMean Difference (95% CI)
Verbal IQ (N = 355)FSIQ (N = 347)
Birth weight (100-g increment)0.1 (−1.0 to 1.3)0.5 (−0.5 to 1.6)
Small for gestational age−2.1 (−6.1 to 2.0)−0.4 (−4.3 to 3.4)
Male gender (vs female)0.5 (−2.9 to 3.9)−0.7 (−4.0 to 2.5)
Antenatal steroids3.0 (−0.6 to 6.6)3.7 (0.3 to 7.1)a
BPD−3.1 (−7.0 to 0.9)−2.4 (−6.1 to 1.4)
Severe brain injury−19.9 (−25.9 to −13.9)a−22.1 (−28.1 to −16.2)a
Maternal age < 20 y (vs ≥20 y)−0.5 (−5.7 to 4.7)−0.4 (−5.4 to 4.6)
Maternal years of education (1- y increment)2.3 (1.6 to 3.1)a2.0 (1.3 to 2.7)a
Single-parent household (vs 2-parent household)−5.3 (−9.1 to −1.6)a−5.9 (−9.4 to −2.3)a
Minority status by maternal report (white non-Hispanic vs others)−8.9 (−12.9 to −4.8)a−8.4 (−12.2 to −4.5)a
Model adjusted R20.290.31