Clinical characteristics of infants* followed in the Hypotension in Preterm (HIP) trial by allocated group
| Dopamine (n=28) | Placebo (n=28) | Outcome data not available (n=2)† | |
| Mean (SD) | Mean (SD) | Mean (SD) | |
| Birth weight (g) | 687 (147) | 740 (172) | 735 (219) |
| Gestational age (weeks) | 25.4 (1.5) | 25.4 (1.3) | 25.2 (1.1) |
| n (%) | n (%) | n | |
| Multiple gestation: Yes | 9 (32) | 12 (43) | 0 |
| Sex: Male | 21 (75) | 19 (68) | 1‡ |
| Maternal ethnicity | |||
| White | 24 (86) | 25 (89) | 2 |
| Black | 1 (4) | 1 (4) | |
| Asian | 2 (7) | 0 (0) | |
| Other | 1 (4) | 2 (7) | |
| Necrotising Enterocolitis (≥stage 2B) | 1 (4) | 4 (14) | 0 |
| Retinopathy of prematurity (≥stage 3)§ | 4 (18) | 2 (10) | 0 |
| Bronchopulmonary Dysplasia¶ | 17 (77) | 13 (62) | 1‡ |
*With either primary and/or secondary outcomes available at 24 months; primary outcome is available for n=27 in the dopamine group and n=28 in the placebo group; secondary outcomes are available for n=20 in the dopamine group and n=19 in the placebo group.
†n=1 from the dopamine group and n=1 from the placebo group.
‡From the placebo group.
§Data available for n=22 in the dopamine group and n=20 in the placebo group.
¶Of those who survived to 36 weeks and had data available, n=22 in the dopamine group and n=21 in the placebo group.