Table 1:
Maternal and infant demographics and clinical characteristics
| Serratia LOI | Non-Serratia LOI* | No LOI | |||||||
|---|---|---|---|---|---|---|---|---|---|
| N | n | % | N | n | % | N | n | % | |
| Maternal Characteristics | |||||||||
| Maternal Race/Ethnicity | |||||||||
| Black non-Hispanic, % | 278 | 107 | 38.5 | 10,281 | 3,552 | 34.5 | 107,685 | 33,532 | 31.1 |
| Hispanic, % | 278 | 53 | 19.1 | 10,281 | 2,121 | 20.6 | 107,685 | 20,885 | 19.4 |
| White non-Hispanic, % | 278 | 108 | 38.8 | 10,281 | 3,834 | 37.3 | 107,685 | 44,453 | 41.3 |
| Other non-Hispanic**, % | 278 | 10 | 3.6 | 10,281 | 774 | 7.5 | 107,685 | 8,815 | 8.2 |
| Antenatal steroids, % | 278 | 228 | 82.0 | 10,346 | 9,052 | 87.5 | 108,459 | 95,690 | 88.2 |
| Chorioamnionitis, % | 272 | 47 | 17.3 | 10,274 | 1,823 | 17.7 | 107,973 | 13,148 | 12.2 |
| Hypertension, % | 274 | 86 | 31.4 | 10,317 | 3,118 | 30.2 | 108,322 | 43,555 | 40.2 |
| Diabetes, % | 268 | 27 | 10.1 | 10,280 | 939 | 9.1 | 108,120 | 12,625 | 11.7 |
| Multiple gestation, % | 279 | 75 | 26.9 | 10,408 | 2,186 | 21.0 | 108,874 | 26,562 | 24.4 |
| Vaginal delivery, % | 279 | 67 | 24.0 | 10,406 | 3,459 | 33.2 | 108,861 | 26,722 | 24.5 |
| Infant Characteristics | |||||||||
| Gestational age | |||||||||
| ≤23 weeks, % | 279 | 54 | 19.4 | 10,408 | 1,833 | 17.6 | 108,874 | 3,946 | 3.6 |
| 24–25 weeks, % | 279 | 115 | 41.2 | 10,408 | 3,628 | 34.9 | 108,874 | 13,312 | 12.2 |
| 26–27 weeks, % | 279 | 69 | 24.7 | 10,408 | 2,554 | 24.5 | 108,874 | 20,968 | 19.3 |
| 28–29 weeks, % | 279 | 23 | 8.2 | 10,408 | 1,568 | 15.1 | 108,874 | 31,148 | 28.6 |
| >29 weeks, % | 279 | 18 | 6.5 | 10,408 | 825 | 7.9 | 108,874 | 39,500 | 36.3 |
| Gestational age (median, Q1, Q3) | 25 (24, 27) | 25 (24, 27) | 30 (29, 32) | ||||||
| Birth weight, grams (median [Q1, Q3]) | 279 | 705 (590, 900) | 10,406 | 760 (610, 985) | 108,873 | 1,140 (870, 1,350) | |||
| Small for gestational age, % | 278 | 53 | 19.1 | 10,311 | 1,622 | 15.7 | 108,644 | 21,183 | 19.5 |
| Male, % | 279 | 145 | 52.0 | 10,405 | 5,719 | 55.0 | 108,857 | 54,065 | 49.7 |
| Inborn, % | 279 | 227 | 81.4 | 10,408 | 8,344 | 80.2 | 108,878 | 94,698 | 87.0 |
| Congenital anomaly, % | 279 | 30 | 10.8 | 10,404 | 846 | 8.1 | 108,866 | 5,613 | 5.2 |
| Morbidities of Prematurity | |||||||||
| Necrotizing enterocolitis, % | 279 | 46 | 16.5 | 10,400 | 1,683 | 16.2 | 108,862 | 4,161 | 3.8 |
| Chronic lung disease, % | 211 | 153 | 72.5 | 8,041 | 4,982 | 62.0 | 93,338 | 25,212 | 27.0 |
| Retinopathy of prematurity, % | 217 | 156 | 71.9 | 8,228 | 5,075 | 61.7 | 87,365 | 25,444 | 29.1 |
| Intraventricular hemorrhage, % | 276 | 123 | 44.6 | 10,136 | 4,353 | 42.9 | 100,148 | 23,466 | 23.4 |
| Morbidities at Discharge | |||||||||
| Tracheostomy, % | 279 | 17 | 6.1 | 10,396 | 351 | 3.4 | 108,851 | 683 | 0.6 |
| Gastrostomy or jejunostomy, % | 279 | 48 | 17.2 | 10,396 | 1,254 | 12.1 | 108,851 | 4,031 | 3.7 |
| Oxygen at discharge, % | 166 | 75 | 45.2 | 6,730 | 2,529 | 37.6 | 94,482 | 12,487 | 13.2 |
| Human milk at discharge, % | 174 | 46 | 26.4 | 6,792 | 2,538 | 37.4 | 94,580 | 49,079 | 51.9 |
| Survival, % | 274 | 206 | 75.2 | 10,258 | 8,030 | 78.3 | 108,323 | 102,789 | 94.9 |
| Length of Stay, days [median, (Q1, Q3)] | |||||||||
| Overall | 274 | 117 (72, 178) | 10,235 | 102 (62, 140) | 108,135 | 62 (41, 89) | |||
| Among survivors | 206 | 136 (102, 187) | 7,999 | 113 (86, 149) | 102,596 | 64 (44, 91) | |||
| Among non-survivors | 68 | 29 (13, 59) | 2,226 | 21 (11, 46) | 5,521 | 13 (6, 31) | |||
N: total number of infants with data available
n: number of infants with given characteristic among total
*
Infants with other late bacterial, CoNS, or fungal infection
**
Includes Asian/Pacific Islander, Native American/Alaska Native, Other