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Table 1 Unadjusted hospital resource utilization outcomes

From: 30-day readmission, antibiotics costs and costs of delay to adequate treatment of Enterobacteriaceae UTI, pneumonia, and sepsis: a retrospective cohort study

  Non-IET IET  
  N = 32,710 N = 4984  
Antibiotics costs, $ Mean/Median SD/IQR Mean/Median SD/IQR P-value
UTI
 Mean 779 1486 1333 2655 <0.001
 Median 405 190, 844 586 226, 1332 <0.001
Sepsis
 Mean 958 2496 1736 3840 <0.001
 Median 478 226, 1007 731 310, 1782 <0.001
Pneumonia
 Mean 887 1106 918 1202 <0.001
 Median 552 269, 1067 459 183, 1148 0.098
Any
 Mean 845 1844 1381 2909 <0.001
 Median 441 206, 919 602 230, 1422 <0.001
Antibiotics costs as a fraction of total hospital costs Mean/Median SD/IQR Mean/Median SD/IQR P-value
UTI
 Mean 4.5% 4.4% 5.0% 5.2% <0.001
 Median 3.4% 1.9%, 5.8% 3.5% 1.8%, 6.4% 0.066
Sepsis
 Mean 4.3% 4.2% 4.3% 5.1% 0.923
 Median 3.2% 1.8%, 5.5% 3.0% 1.4%, 5.3% <0.001
Pneumonia
 Mean 5.3% 4.4% 4.6% 4.3% <0.001
 Median 4.1% 2.3%, 7.0% 3.2% 1.7%, 6.0% <0.001
Any
 Mean 4.5% 4.4% 4.7% 5.0% 0.028
 Median 3.4% 1.9%, 5.8% 3.3% 1.6%, 6.0% 0.012
30-day readmission Rate N at risk Rate N at risk P-value
UTI 20.8% 16,028 24.8% 2194 <0.001
Sepsis 20.6% 9097 26.7% 1191 <0.001
Pneumonia 23.8% 3521 25.8% 294 0.204
Any 21.1% 28,646 25.6% 4279 <0.001
  1. IET inappropriate empiric therapy, SD standard deviation, UTI urinary tract infection, IQR interquartile range