Table 1. Characteristics of Study Population.
| Characteristic | Received dexmedetomidine (n = 384) | Did not receive dexmedetomidine (n = 374 058) |
|---|---|---|
| Gestational age, median (IQR), wk | 27 (25-31) | 34 (32-35) |
| Birth weight, median (IQR), kg | 0.89 (0.66-1.56) | 2.02 (1.58-2.42) |
| Sex, No. (%) | ||
| Male | 226 (58.9) | 201 743 (53.9) |
| Female | 158 (41.1) | 172 226 (46.0) |
| Missing | 0 | 89 (0.1) |
| Length of hospitalization, median (IQR), d | 71 (23-117) | 18 (11-34) |
| Race and ethnicity, No. (%)a | ||
| Black | 121 (31.5) | 77 687 (20.8) |
| Hispanic | 52 (13.5) | 73 846 (19.7) |
| White | 177 (46.1) | 175 725 (47.0) |
| Other | 23 (6.0) | 23 583 (6.3) |
| Missing | 11 (2.9) | 23 217 (6.2) |
| Maternal age group, No. (%), y | ||
| ≤19 | 15 (3.9) | 23 791 (6.4) |
| 20-29 | 211 (54.9) | 174 942 (46.8) |
| 30-39 | 145 (37.8) | 156 664 (41.9) |
| ≥40 | 10 (2.6) | 17 244 (4.6) |
| Missing | 3 (0.8) | 1417 (0.4) |
| Drug exposure, No. (%) | ||
| Fentanyl | 154 (40.1) | 16 713 (4.5) |
| Morphine | 176 (45.8) | 14 920 (4.0) |
| Clonidine | 48 (12.5) | 437 (0.1) |
| Any opioid | 245 (63.8) | 28 194 (7.5) |
| Mechanical ventilation, median (IQR), d | 9 (2-36) | 0 (0-0) |
a
Other indicates not identified as Black, Hispanic, or White. The Other group is presented the way the database is organized.