Table 1.

Infant Characteristics at Recruitment (N = 188)

FT
n = 39
HPT
n = 32
SPT
n = 54
NPT
n = 34
SGA
n = 29
Birth weight*(g)3447a ± 4041539b ± 2011278c ± 3111158c ± 271142c ± 344
(2727–4370) (900–1820) (780–1800) (720–1670) (640–1750)
Gestational age*(wk)39.9a ± .831.6b ± 1.729.4c ± 2.328.4c ± 2.131.9b ± 2.8
(38–43)(28–34)(25–33)(24–33)(26–36)
Apgar (1 min)*8a (6–9)6b (2–9)5b (1–9)5b (1–9)6b (1–9)
Days hospitalized*3a ± .4330b ± 854c ± 2667c ± 2053c ± 31
(2–5)(17–55) (17–137) (23–107) (17–134)
Hobel Score10*17a ± 13107b ± 33144c ± 33165d ± 27138c ± 38
(0–52) (51–187) (78–202) (85–220) (33–200)
  • Plus and minus values are means ± SD. The range is given in parentheses.*Letters in the body of the table indicate significant differences among the study groups, a>b>c, at P = .0001.