Table 2 Study entrance information for subjects*

Gestational age (weeks)

39.8 ± 1.2 (16)

39.5 ± 1.1 (17)

0.481

Mode of birth, vaginal/cesarean, (n/%)

12/4 (75/25)

11/6 (65/35)

0.708

Birth weight (g)

3333 ± 490 (16)

3321 ± 330 (17)

0.932

Birth length (cm)

49.1 ± 3.7 (15)

49.1 ± 1.9 (17)

0.965

Birth head circumference (cm)

33.7 ± 1.8 (15)

34.2 ±1.3 (15)

0.425

Age at study entrance (days)

117 ± 26 (16)

108 + 27 (17)

0.346