Table 1.
Demographic and clinical characteristics for preterm neonates admitted to UCSF
| Demographic | |
| Subjects (n) | 129 |
| MRI scans (n) | 170 |
| Sex: male (n) | 70 |
| GA at birth (weeks, mean ± SD) | 28.2 ± 1.9 |
| Weight at birth (gram, mean ± SD) | 1080 ± 311.2 |
| PMA at MRI | |
| 1st scans (n = 129) | 31.4 ± 1.9 |
| 2nd scans (n = 41) | 36.0 ± 1.9 |
| Characteristica | Number (%) |
| Maternal/antenatal factors | |
| Maternal age, yrs | 29.8 ± 6.5 |
| Placenta previa | 11 (8.5) |
| Drug abuseb | 11 (8.5) |
| Magnesium sulfate | 80 (62.0) |
| Exposure to prenatal steroids | 109 (84.5) |
| Chorioamnionitis | 13 (14.0) |
| Delivery / Perinatal factors | |
| Twin | 58 (44.9) |
| Caesarean section delivery | 78 (60.5) |
| Postnatal factors | |
| Exposure to postnatal steroids | 13 (14.0) |
| Hypotension | 76 (58.9) |
| Infant infection | 70 (54.2) |
| Patent ductus arteriosus | 65 (50.4) |
| Necrotizing enterocolitisc | 5 (3.9) |
| Duration of intubation, days | 9.1 ± 13.6 |
| Chronic lung disease | 36 (27.9) |
| Neurodevelopmental outcome (Bayley scales III) in 30 monthsd | |
| Cognitive score | 103.0 ± 15.45 |
| Language score | 92.6 ± 14.0 |
| Motor score | 93.7 ± 13.2 |
a Data presented as number (%), or mean ± standard deviation. b All subjects with maternal smoking (based on self-report) were exposed to marijuana, two were also exposed to tobacco. c It was diagnosed based on Bell’s stage II criteria [24]; d Scores were derived from 38 preterm subjects revisiting the center at 30 months after their birth. PMA: postmenstrual age