Table 1.
Demographic characteristics of the population used to model apnea (2nd column) as a function of PMA and (3rd column) in the eight days prior to discharge home. Data are presented as median (25th, 75th percentile).
| Infants studied … | As a function of PMA | Prior to discharge home |
|---|---|---|
| N | 298 | 196 |
| Gestational age (weeks) | 27 (25, 29) | 28 (26, 29) |
| Birth weight (grams) | 1010 (788, 1263) | 1025 (795, 1298) |
| Males | 143 | 108 |
| Discharged home | 223 | 196 |
| Died | 19 | 0 |
| Transferred | 56 | 0 |
| PMA at discharge (weeks) | 37 (35, 39) | 37 (35, 39) |
| Days in NICU | 52 (26, 93) | 62 (36, 93) |
| Days on mechanical ventilation | 3 (0, 29) | 2 (0, 24) |
| ABDs: Apneas >10 sec with bradycardia (<100 bpm) and O2 desaturation (<80%) | 26,088 | 1,577 |
| ABDs >10 sec with bradycardia (<100 bpm) and O2 desaturation (<80%), after additional filtering | N/A | 724 |
| ABD events per patient per day of analyzable data | 1.48 (0.37, 3.4) | 0.7 (0.1, 2)† |
†
ABDs per day during last 8 days of stay