TABLE 1

Description of Initial Empirical Antibiotic Therapy According to Neonatal Research Network Center (N = 4039)

CenterProportion, % (n)a
Ampicillin + GentamycinAmpicillin + CefotaximeAmpicillin + Other AminoglycosidesbAmpicillin OnlyGentamycin + Other AntibioticOther Antibioticsc
185002013
29900001
31950102
4320292325
578941<17
6970<10<13
79013213
89410212
983011402
109104302
119700102
129202402
13960<1301
149700101
159412102
1610000000
179200223
189700022
1930650006
Total83 (3334)7 (297)3 (137)2 (69)2 (73)3 (129)
  • a Row percentages may not total 100 because of rounding.

  • b Other aminoglycosides indicate amikacin or tobramycin.

  • c Other antibiotics include carbenicillin, oxacillin, penicillin G, piperacillin, nafcillin, cefazolin, ceftazadime, ceftriaxone, cefotetan, vancomycin, clindamycin, and erythromycin. All antibiotics listed were administered to ≥1 infant in the study cohort.