Table 2.

Baseline Characteristics of Enrollees

Number Enrolled
Conventional
325
Supplemental
324
Totals
649
Birth weight (g)*721  ± 160731  ± 161726  ± 160
Gestational age (wk)*25.4  ± 1.525.4  ± 1.525.4  ± 1.5
PMA (wk)*35.3  ± 2.635.4  ± 2.535.4  ± 2.5
Weight at entry (g)*1538  ± 4451556  ± 4421547  ± 443
Gender (% male) 53.9% 60.5% 57.2%
Race
 White180 (55%)179 (55%)359 (55%)
 Black 91 (28%)101 (31%)192 (30%)
 Hispanic 31 (10%) 26 (8%)57 (9%)
 Others23 (7%)18 (6%)41 (6%)
Pulmonary status
 Pulmonary score*.53  ± .36.56  ± .37.55  ± .37
  Ventilator 46 (14%) 57 (18%)103 (16%)
  CPAP or hood 57 (18%) 55 (17%)112 (17%)
  Nasal cannula210 (64%)203 (63%)413 (64%)
  No oxygen12 (4%)9 (3%)21 (3%)
 Medications
  Methylxanthines68.6%72.5%70.1%
  Diuretics52.3%57.1%54.1%
  CLD steroids28.1%30.6%29.3%
 SES
  High (35–66)27%27%27%
  Intermediate (20–34)30%29%29%
  Low (0–19)29%26%27%
  Missing14%19%16%
  • * Mean ± standard deviation.

  • Steroids given systemically for CLD within the past week, not including inhaled steroids. Excludes 33 conventional and 40 supplemental infants from the early months of the study when data on the use of steroids were not being collected.

  • SES by Hollingshead criteria,25 as assessed at discharge.