| Placebo (N=14) | UDCA (N=12) | P | |
| Gestational age, mean (SD) in weeks | 27 4/7 (3/7) | 27 6/7 (3/7) | 0.84 |
| Birth weight, mean (SD) in grams | 1032 (608) | 1237 (696) | 0.43 |
| Sex (female) | 6 (43%) | 5 (42%) | 0.95 |
| Intrauterine groth restriction | 5 (36%) | 1 (8%) | 0.12 |
| Respiratory distress syndrome | 12 (86%) | 10 (83%) | 0.64 |
| Apnea on Caffeine | 10 (71%) | 10 (83%) | 0.4 |
| Surgical intervention before PNALD | 4 (29) | 4 (33%) | 0.56 |