Details of the infants and ambient measurement conditions
| Number of infants (M/F) | Gestation (weeks)1-150 | Birth weight (kg)1-150 | Ambient relative humidity (%)1-151 | Ambient temperature (°C)1-151 | |
| Any steroids | 87 (48/39) | 30 (25–33) | 1.31 (0.56–2.67) | 34.7 (9–70) | 35.3 (32.0–37.9) |
| No steroids | 50 (32/18) | 29 (25–33) | 1.33 (0.73–1.53) | 32.6 (16–62) | 34.8 (27.0–37.3) |
| Contemporary | 12 (9/3) | 30 (26–33) | 1.47 (0.93–2.01) | 30.2 (16–60) | 35.2 (31.9–37.1) |
| Historical | 38 (23/15) | 29 (25–33) | 1.28 (0.73–2.58) | 44.3 (31–62) | 33.4 (27.0–37.1) |