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Table 1 Patient characteristics for those in the trauma and neurosurgery intensive care unit and medical surgical intensive care unit during 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 Characteristic Pre-intervention period Post-intervention period p-value
TNICU     
  Admissions n = 1330 n = 1387  
  Age, mean (SD) 55 (18) b 56 (18) 0.12
  Male 757 (57) 801 (58) 0.66
  Admitting diagnosis    0.0086
 Neurological 879 (66) 937 (68)
 Trauma 327 (25) 364 (26)
 Other 124 (9) 86 (6)
  Ventilator utilization ratio 0.59 0.60 0.80
  Multiple organ dysfunction score, mean (SD) 2.39 (0.34) 2.32 (0.24) 0.56a
  Febrile respiratory illness rate, cases per 1000 patient days 0.5 0.3 0.66
  Influenza rate, cases per 1000 patient days 0 0 1.00
  Patient days attributable to cystic fibrosis 0 (0) 0 (0)
MSICU     
  Admissions n = 1305 n = 1369  
  Age, mean (SD) 61 (17) 59 (18) 0.016
  Male 784 (60) 833 (61) 0.68
  Admitting diagnosis    0.0082
 Respiratory 192 (15) 265 (19)
 Gastrointestinal 142 (11) 123 (9)
 Neurological 88 (7) 95 (7)
 Other 883 (68) 886 (65)
  Ventilator utilization ratio 0.69 0.69 0.77
  Multiple organ dysfunction score, mean (SD) 4.26 (0.38) 3.83 (0.33) 0.0061a
  Febrile respiratory illness rate, cases per 1000 patient days 21.4 17.6 0.099
  Influenza rate, cases per 1000 patient days 1.7 2.1 0.52
  Patient days attributable to cystic fibrosis 68 (1) 277 (4) <0.0001
  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. at-test; b2 data points missing