Table 1.

Characterization of Study Population

Number of infants192
Birth weight (g) range*1055 ± 246 (570–1500)
Gestational age (wk) range*28.7 ± 2.2 (24–34)
Sex
 Males109 (57)†
 Females83 (43)
Race
 African-American103 (54)
 Latin-American44 (23)
 White40 (21)
 Asian5 (2)
Clinical
 Maternal PIH‡27 (14)
 5-min Apgar score ≤543 (23)
 Respiratory distress syndrome114 (59)
 Mechanical ventilation164 (85)
 Apnea of prematurity155 (81)
  • * Values are presented as means ± SD.

  • Numbers in parentheses are percentages (except for range).

  • Pregnancy-induced hypertension.