Table 1.
Demographics of infants with urine cultures
| Infants with negative urine cultures, N=4697 (%) | Infants with positive urine cultures, N=984 (%) | P | |
|---|---|---|---|
| Birth weight (g) | <0.01 | ||
| <1000 | 1323 (28%) | 462 (47%) | |
| 1000–1499 | 843 (18%) | 222 (23%) | |
| 1500–2499 | 1045 (22%) | 138 (14%) | |
| ≥2500 | 1466 (31%) | 161 (16%) | |
| Gestational age (weeks) | <0.01 | ||
| <26 | 635 (14%) | 268 (27%) | |
| 26–28 | 949 (20%) | 278 (28%) | |
| 29–33 | 1131 (24%) | 230 (23%) | |
| 34–36 | 812 (17%) | 80 (8%) | |
| ≥37 | 1170 (25%) | 128 (13%) | |
| Sex | <0.01 | ||
| Male | 2587 (55%) | 648 (66%) | |
| Race/ethnicity | <0.01 | ||
| White | 1771 (39%) | 444 (46%) | |
| Black | 661 (14%) | 205 (21%) | |
| Hispanic | 1979 (43%) | 270 (28%) | |
| Other | 182 (4%) | 46 (5%) | |
| Delivery | 0.92 | ||
| Cesarean section | 2807 (60%) | 590 (60%) | |
| Mechanical ventilation on day of life 1 | <0.01 | ||
| Yes | 1909 (41%) | 578 (59%) |