TABLE 1

Description of Study Cohort

Demographicsn (%) or median (IQR)
Total infants193
Age at admission, d, median (IQR)37 (22–48)
Age ≤28 d, n (%)69 (35.8)
Male sex, n (%)a105 (54.4)
Race, n (%)
 White115 (59.6)
 African American36 (18.7)
 Otherb30 (15.5)
 Unknown12 (6.2)
Ethnicity, n (%)
 Hispanic or Latino55 (28.5)
 Not Hispanic or Latino134 (69.4)
 Unknown4 (2.1)
Season, n (%)
 Winter: December to February43 (22.3)
 Spring: March to May48 (24.9)
 Summer: June to August62 (32.1)
 Fall: September to November40 (20.7)
Abnormal urinary anatomy, n (%)57 (29.5)
Duration of fever ≥24 h, n (%)35 (18.1)
Presence of bacteremia, n (%)29 (15.0)
Antibiotic therapy
 Duration of parenteral therapy, h, median (IQR)59 (43–114)
 Total therapy, d, median (IQR)13 (10–14)
Outcomes
 LOS, h, median (IQR)71 (57–127)
  • a Percentages may not sum to 100 because of rounding.

  • b Including American Indian, Alaskan native, Asian, Native Hawaiian, Pacific Islander, Hispanic, and multiple race.