Table 1.
Demographics
| G-CSF | No G-CSF | |
|---|---|---|
|
| ||
| N=2142 (%) | N=28,563 (%) | |
| Gestational age, weeks | ||
| <26 | 480 (22) | 4544 (16) |
| 26–28 | 751 (35) | 7942 (28) |
| 29–32 | 524 (24) | 9448 (33) |
| 33–36 | 230 (11) | 4230 (15) |
| ≥37 | 155 (7) | 2377 (8) |
| Birth weight, g | ||
| <1000 | 1170 (55) | 10,929 (38) |
| 1000–1499 | 463 (22) | 8169 (29) |
| 1500–2499 | 326 (15) | 6536 (23) |
| 2500–3499 | 137 (6) | 2150 (8) |
| ≥3500 | 45 (2) | 751 (3) |
| Postnatal age, days | ||
| ≤7 | 20,768 (73) | 1538 (72) |
| 8–30 | 3584 (13) | 358 (17) |
| >30 | 4211 (15) | 246 (11) |
| 5-min Apgar score | ||
| 0–3 | 110 (5) | 1255 (5) |
| 4–6 | 448 (21) | 4304 (15) |
| 7–10 | 1533 (73) | 22312 (80) |
| Race | ||
| White | 1037 (50) | 13,360 (48) |
| Black | 526 (25) | 7564 (27) |
| Hispanic | 401 (19) | 5305 (19) |
| Other | 108 (5) | 1410 (5) |
| Small for gestational age | 696 (33) | 6099 (21) |
| Male | 1311 (61) | 16948 (59) |
| Cesarean section | 1548 (73) | 20436 (72) |
| Maternal hypertension* | 356 (17) | 4296 (15) |
| Inotropic support† | 640 (30) | 3562 (12) |
| Ventilator support† | 1443 (47) | 12,745 (45) |
| Concurrent bacteremia | 134 (6) | 1007 (4) |
*
Maternal hypertension includes preeclampsia, eclampsia and HELLP (hemolysis, elevated liver enzymes, low platelet) syndrome.
†
On the first day of neutropenia (untreated group) or first day of G-CSF therapy (treated group).