Baseline data comparing infants randomised to lower iodine versus higher iodine milk
| Lower iodine | Higher iodine | |
| Number of cases | 60 | 61 |
| Sex (F:M) | 27:33 | 35:26 |
| Gestation (completed weeks) | 30 (25–32) | 30 (24–32) |
| Birth weight (g) | 1363 (724–2080) | 1520 (530–2100) |
| Intrauterine growth retardation <3rd centile | 11 | 11 |
| Apgar score at | ||
| 1 minute | 8 (1–10) | 7 (1–10) |
| 5 minutes | 9 (2–10) | 9 (4–10) |
| Caesarean section | 38 | 33 |
| Prolonged rupture of membranes | 18 | 17 |
| Antenatal steroids received | 56 | 57 |
| Respiratory distress syndrome | 42 | 37 |
| Administration of surfactant | 38 | 36 |
Values are numbers of cases or median (range). No significant intergroup differences were observed.