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Table 1 Patient characteristics according to P. aeruginosa carriage status on ICU admission

From: A prospective survey of Pseudomonas aeruginosa colonization and infection in the intensive care unit

  All patients (n = 38) Negative on admission (n = 25) Positive on admission (n = 13) P (OR, 95% CI)
Age mean (range) 70.3 (15-96) 65.6 (15-96) 79.3 (45-94) 0.0039
Age over 70 years 22 (58%) 11 (44%) 11 (84%) 0.035 (7, 1.2-38.3)
Sex
 Male 22 (58) 16 (64) 6 (46) 0.52
 Female 16 (42) 9 (36) 7 (54) 0.52
LTCF residency 3 (8) 0 3 (23) 0.033 (17, 0.8-358)
APACHE II score, mean (range) 21.4 (10-42) 21.0 (10-42) 22.1 (14-34) 0.66
Days in hospital until ICU admission, mean (range) 3.7 (0-22) 3.7 (0-22) 3.7 (0-11) 0.98
Hospitalization in the last 90 days 19 (50) 11 (44) 8 (61) 0.49
Surgery in the last 30 days 14 (37) 8 (32) 6 (46) 0.48
Antimicrobials in the last 90 days 17 (45) 12 (48) 5 (38) 0.73
Prior PA in last 90 days 3 (8) 1 (4) 2 (15) 0.26
ICU LOS, mean (range) 15 (3-62) 10.6 (3-39) 23.7 (5-62) 0.0338
Hospital LOS, mean (range) 28 (6-88) 25 (6-80) 33.7 (10-88) 0.14
Ventilation days in ICU, mean (range) 17.3 (0-88) 12.8 (0-79) 26 (0-88) 0.16
COPD 11 (29) 7 (28) 4 (31) 1
IHD 15 (39) 8 (32) 7 (54) 0.29
CHF 14 (37) 7 (28) 7 (54) 0.16
Past CVA 9 (24) 6 (24) 3 (23) 1
CRF 8 (21) 5 (20) 3 (23) 1
Immunosuppression 4 (10) 4 (16) 0 0.27
Dementia 4 (10) 1 (4) 3 (23) 0.1
Active malignancy 4 (10) 3 (12) 1 (7) 1
DM type 2 15 (39) 14 (56) 1 (7) 0.005 (0.06, 0.007-0.58)
Tracheostomy in ICU 12 (31) 6 (24) 6 (46) 0.27
ICU death 5 (13) 2 (8) 3 (23) 0.31
Overall death 13 (34) 8 (32) 5 (38) 0.7
  1. All numbers represent patients (percent), unless specified otherwise. LTCF long term care facility, APACHE, acute physiology and chronic health evaluation, ICU Intensive care unit, PA P. aeruginosa, LOS length of stay, COPD chronic obstructive pulmonary disease, IHD ischemic heart disease, CHF congestive heart failure, CVA cerebrovascular accident, CRF chronic renal failure, DM diabetes mellitus, VAP ventilator associated pneumonia, CLABSI central line associated blood stream infection, CAUTI catheter associated urinary tract infection, OR odds ratio, CI confidence interval