Table 1 Cohort characteristics
Cohort characteristics (N = 95) | Characteristics, mean ± SD or N (%) | p value* | |
|---|---|---|---|
Male (N = 36) | Female (N = 59) | ||
Demographic characteristics | |||
Gestational age (weeks) | 26.4 ± 1.7 | 26.2 ± 1.7 | 0.52 |
Race: African-Americans | 31 (86%) | 47 (80%) | 0.82 |
Anthropometric data | |||
Weight | |||
Birth weight (g) | 856 ± 110 | 789 ± 153 | 0.02 |
Birthweight centile | 43 ± 25 | 41 ± 21 | 0.65 |
Mean weight centile before the transition phase | 21 ± 13 | 25 ± 16 | 0.14 |
Mean weight centile after the transition phase | 21 ± 12 | 23 ± 14 | 0.44 |
Mean weight centile change (before the transition phase-after transition phase) | + 0.19 ± 8.6 | − 2.2 ± 8.2 | 0.17 |
Head circumference | |||
Birth HC centile | 24 ± 1.6 | 23 ± 1.6 | 0.26 |
Mean HC centile before the transition phase | 16 ± 19 | 21 ± 20 | 0.22 |
Mean HC centile after the transition phase | 14 ± 19 | 17 ± 15 | 0.57 |
Mean HC centile change (before the transition phase-after transition phase) | − 1.08 ± 13 | − 3 ± 14 | 0.51 |
Comorbidities | |||
Chronic lung disease | 22 (61.1) | 32 (54.2) | 0.53 |
Patent ductus arteriosus | 17 (47.2%) | 31 (52.5%) | 0.67 |
Any intraventricular hemorrhage | 12 (33.3%) | 17 (29%) | 0.64 |
Any retinopathy of prematurity | 11 (30.6%) | 27 (45.8%) | 0.19 |
Culture positive infection | 4 (11.1%) | 13 (22.0%) | 0.27 |
Postnatal steroid | 8 (22.2) | 15 (25.4) | 0.8 |