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. 2015 Oct 29;15:480. doi: 10.1186/s12879-015-1223-2

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.

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

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