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Table 1 Results of unadjusted conditional logistic regression modeling of the possible risk factors for CRAB acquisition by cases and controls in the neurosurgical intensive care unit (NSICU)

From: Faucet aerators as a reservoir for Carbapenem-resistant Acinetobacter baumannii: a healthcare-associated infection outbreak in a neurosurgical intensive care unit

Possible risk factorCase patients
(n = 6)
Control patients
(N = 12)
Univariate OR
(95% CI)a
P
Blood transfusion or the use of blood products2 (33.33%)5 (41.67%)0.70 (0.09–5.43)1.000
Urinary catheterization6 (100.00%)12 (100.00%)
Hemodialysis0 (0.00%)0 (0.00%)
Venous catheterization6 (100.00%)6 (50.00%)0.054
Mechanical ventilation5 (83.33%)8 (66.67%)2.50 (0.21–29.26)0.615
Tracheotomy5 (83.33%)6 (50.00%)5.00 (0.44–56.62)0.316
Hypertension b5 (83.33%)5 (41.67%)7.00 (0.61–79.87)0.152
Diabetes0 (0.0%)1 (8.33%)1.000
Chronic obstructive pulmonary disease1 (16.67%)0 (0.00%)0.333
Tumor0 (0.00%)0 (0.00%)
Surgery4 (66.67%)4 (33.33%)0.25 (0.03–2.00)0.191
Medical group3 (50.00%)7 (58.33%)0.71 (0.10–5.12)0.738
  1. NOTE. Data are no. (%) of objects. CI: confidence interval; OR: odds ratio
  2. a ORs and 95% CIs for partial factors cannot be estimated, because the rate of these variables in the case or control was 0 or 100%
  3. b Hypertensive patients were defined as those who had a systolic blood pressure ≥ 140 mmHg and/or diastolic blood pressure ≥ 90 mmHg [21]