Table 1.
Demographics and clinical characteristics of the patient sample according to BPD and PH status.
| Control (n = 15) | BPD (n = 11) | BPD–PH (n = 14) | P value | |
|---|---|---|---|---|
| Infant characteristics | ||||
| Gestational age (weeks) | 27.5 ± 1 | 26.1 ± 1.5 | 27 ± 1 | 0.02 |
| Birth weight (grams) | 1,081 ± 197 | 940 ± 127 | 901 ± 173 | 0.02 |
| Birth weight percentile | 67 ± 24 | 73 ± 23 | 55 ± 29 | NS |
| Male sex (%) | 6 (40) | 8 (73) | 4 (29) | NS |
| Maternal characteristics | ||||
| Maternal age (years) | 28.2 ± 7.2 | 31.1 ± 5.9 | 32.1 ± 6.2 | NS |
| Maternal race | ||||
| Black | 5 (33) | 0 | 2 (14) | NS |
| White | 5 (33) | 6 (55) | 9 (64) | |
| Asian | 0 | 0 | 2 (14) | |
| Hispanic | 4 (27) | 5 (45) | 1 (7) | |
| Other/unknown | 1 (6) | 0 | 0 | |
| Preterm labor (%) | 10 (67) | 10 (91) | 11 (79) | NS |
| Premature rupture of membranes (%) | 6 (40) | 5 (45) | 4 (29) | NS |
| Prolonged rupture of membranes (%) | 5 (33) | 4 (36) | 4 (29) | NS |
| Cesarean section (%) | 8 (53) | 9 (82) | 12 (86) | NS |
| Antenatal steroids (%) | 14 (93) | 11 (100) | 13 (93) | NS |
| Preeclampsia (%) | 3 (20) | 1 (9) | 3 (21) | NS |
| Chrorioamnionitis (%) | 3 (20) | 1 (9) | 1 (7) | NS |
| Non-reassuring fetal heart tones (%) | 2 (13) | 1 (9) | 1 (7) | NS |
| Apgar 1 min (mean) | 6 + 1.9 | 3.6 + 2.2 | 3.9 + 2.5 | 0.02 |
| Apgar 5 min (mean) | 7.9 ± 0.7 | 6.4 ± 1.4 | 5.7 ± 2.6 | 0.005 |