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Table 5 Comparison of clinical outcomes in each intervention unit in the pre- and post-intervention periods.

From: Differential outcome of an antimicrobial stewardship audit and feedback program in two intensive care units: a controlled interrupted time series study

Unit Variable Pre-intervention Post-intervention p-value
TNICU     
  Discharges n = 1302 n = 1358  
  ICU mortality 86 (7) 115 (8) 0.069
  ICU length of stay in days, mean (SD) 4.7 (0.6) 4.6 (0.6) 0.38 a
  Readmission to unit within 48 hours 17 (2) 19 (2) 0.81
MSICU     
  Discharges n = 1247 n = 1307  
  ICU mortality 140 (11) 147 (11) 0.99
  ICU length of stay in days, mean (SD) 5.5 (0.8) 5.4 (1.0) 0.76 a
  Readmission to unit within 48 hours 28 (3) 33 (3) 0.62
  1. Data are number (%) unless otherwise indicated. All p-values calculated using Chi-square unless otherwise noted. SD = standard deviation; TNICU, trauma and neurosurgery intensive care unit; MSICU, medical surgical intensive care unit.
  2. aWilcoxon rank sum test