Table 1.
Preterm infant characteristics, N = 42
| All (N = 42) | STS ≤32 wk (N = 10) | Non-STS ≤32 wk (N = 10) | STS >32 wk (N = 12) | Non-STS > 32 wk (N = 10) | |
|---|---|---|---|---|---|
| Gestational age at birth (weeks mean ± SD) | 28.1 ± 1.6 | 27.5 ± 0.9 | 26.5 ± 1.4 | 29.4 ± 0.5 | 28.7 ± 1.4 |
| Birth weight (grams ± SD) | 1,049 ± 207.2 | 1,053 ± 130.7 | 853 ± 39.7a p < 0.002 |
1,226 ± 123.6 | 1,028 ± 242.9a p < 0.036 |
| History of IUGR < 10%, N (%) | 2 (4.8) | 0 (0) | 0 (0) | 1 (8.3) | 1(10) |
| Gestational age at sampling (weeks mean ± SD) | 33.2 ± 2.9 | 31.7 ± 0.7 | 30.7 ± 1.5 | 34.6 ± 1.8 | 35.4 ± 3.7 |
| Cesarean delivery, N (%) | 35 (83.3) | 8 (80) | 7 (70) | 11 (91.6) | 9 (90) |
| Antenatal steroids, N (%) | 36 (85.7) | 7 (70) | 10 (100) | 10 (83) | 9 (90) |
| Antenatal antibiotics, N (%) | 19 (45.2) | 4 (40) | 2 (20) | 7 (58) | 6 (60) |
| Race/Ethnicity, N (%) | |||||
| Caucasian | 16 (38.1) | 5 (50) | 4 (40) | 5 (41.6) | 2 (20) |
| Black | 8 (19.0) | 3 (30) | 2 (20) | 1 (8.4) | 2 (20) |
| Asian | 10 (23.8) | 1 (10) | 1 (10) | 3 (25) | 5 (50) |
| Hispanic | 8 (19.0) | 1 (10) | 3 (30) | 3 (25) | 1 (10) |
| Male gender, N (%) | 18 (42.9) | 5 (50) | 5 (50) | 5 (41.7) | 3 (30) |
| Human milk, N (%) | 36 (85.7) | 9 (90) | 10 (100) | 11 (91.7) | 6 (60) |
a
Significant values among ≤32 weeks and >32 weeks groups; other comparisons were not significant at p < 0.05.