Table 1.
Patient demographics and baseline characteristics
| Number or mean | Percent or Standard Deviation | |
|---|---|---|
| Maternal race | ||
| White | 9477 | 48.6% |
| Black | 6346 | 32.5% |
| Hispanic | 2675 | 13.7% |
| Asian | 639 | 3.3% |
| Native American | 147 | 0.8% |
| Other | 219 | 1.1% |
| Infant factors | ||
| Gestational age (weeks) | 26.1 | (1.9) |
| Birthweight (grams) | 829.3 | (191.1) |
| SGA (<10%ile) | 3007 | 15.5% |
| Male | 9960 | 51.1% |
| Multiple gestation | 4853 | 24.9% |
| Inborn | 15801 | 81.0% |
| Presence of NICU co-morbidity | ||
| IVH grade 3–4 | 1832 | 9.5% |
| Periventricular leukomalacia | 755 | 3.9% |
| Bronchopulmonary Dysplasia | 8864 | 46.4% |
| Necrotizing enterocolitis | 1273 | 6.5% |
| Necrotizing enterocolitis requiring surgery | 998 | 5.1% |
| Focal intestinal perforation | 796 | 4.1% |
| Severe ROP | 2647 | 14.0% |
| PDA requiring surgical ligation | 3137 | 16.1% |
| Need for durable medical equipment at discharge | ||
| Gastrostomy or Jejunostomy tube | 1274 | 6.5% |
| Home oxygen | 5105 | 28.6% |
| Tracheostomy/Tracheotomy | 336 | 1.7% |
| Apnea/Cardiorespiratory monitoring | 7327 | 41.1% |
| Hospital factors | ||
| Hospital type | ||
| Government-Owned | 5 | 8.6% |
| Non-Proft | 47 | 81.0% |
| Private | 4 | 6.9% |
| Other | 2 | 3.5% |
| Academic Hospital | 42 | 72.4% |
| Avg number of ELBW admissions annually | 62.5 | 31.2 |
| % white ELBW admissions | 48.2% | 21.6 |
| Participation in HRIF | 8721 | 44.7% |