TABLE 1.
Characteristic | No. of patients (%) unless specified otherwisea |
P value | |
---|---|---|---|
Positive for MDR AB strains (n = 320) | Negativeb for MDR AB strains (n = 7,605) | ||
Age of 65 yrs or older | 100 (31.3) | 2,205 (29.0) | 0.38 |
Female sex | 136 (42.5) | 3,447 (45.3) | 0.32 |
ICU type | <0.01 | ||
MICU | 261 (81.6) | 4,557 (59.9) | |
SICU | 59 (18.4) | 3,048 (40.1) | |
Length of stay in hospital before ICU admission of 2 or more days | 47 (14.7) | 1,868 (24.6) | <0.01 |
Previously admitted 1 or more times | 150 (46.9) | 2,791 (36.7) | <0.01 |
Antibiotic use in hospital prior to ICU admission | 161 (50.3) | 3,338 (43.9) | 0.02 |
Surgery | 40 (12.5) | 867 (11.4) | 0.54 |
Total Elixhauser comorbidity index [median (range)] | 4.00 (9.0) | 4.00 (11.0) | 0.57 |
MDR AB, multidrug-resistant Acinetobacter baumannii.
This group includes patients colonized with susceptible (non-MDR) Acinetobacter baumannii strains.