TABLE 1

Characteristics of Participating Infants and Their Mothers of the Main and Additional Studies

CharacteristicStudy A (N = 200)Study B (N = 50)
Infant
    Male, n (%)93 (46.5)24 (48.0)
    Birth weight, mean ± SD, g3392 ± 2963421 ± 259
    Gestational age, mean ± SD, wk39.7 ± 0.939.2 ± 0.8
    Apgar score of >8 at 5 min, n (%)199 (99.5)49 (98.0)
    Breastfed, n (%)185 (92.5)44 (88.0)
    Age at the test, mean ± SD, h45.0 ± 6.644.4 ± 6.9
Mother
    Age, mean ± SD, y29.9 ± 4.728.1 ± 3.8
    First delivery, n (%)102 (51.0)23 (46.0)