Table 1.
Demographic information for term and preterm infants
| Clinical variable | Preterm infants (N = 20) | Term infants (N = 57) | P-value |
|---|---|---|---|
| Gestational age at birth (weeks)—mean standard deviation (SD) | 27 (2) | 39 (1) | <0.001a |
| Female—N (%) | 9 (45%) | 31 (54%) | 0.470b |
| African-American—N (%) | 10 (50%) | 37 (65%) | 0.239b |
| Postmenstrual age at scan (weeks)—mean (SD) | 38 (2) | 39 (1) | 0.02a |
| Birthweight (g)—mean (SD) | 1008 (206) | 3315 (417) | <0.001a |
| Multiple gestation—N (%) | 7 (35%) | 0 (0%) | <0.001b |
| Antenatal steroids—N (%) | 18 (90%) | ||
| Inotropic support—N (%) | 5 (25%) | ||
| Postnatal steroids—N (%) | 3 (15%) | ||
| Inbutated/ventilated—N (%) | 15 (75%) | ||
| Total ventilator days—mean (SD) | 9 (16) | ||
| Total parenteral nutrition (days)—mean (SD) | 20 (17) | ||
| Patent ductus arteriosus treated medically—N (%) | 6 (30%) |
aResults from two-sample, two-tailed t-test.
bResults from chi-square test.