Table 2.
Isolated microorganisms by treatment group
| Characteristic | PMX-HP group (n = 29) | Non PMX-HP group (n = 30) | Overall (N = 59) | P valuea |
|---|---|---|---|---|
| Organism | ||||
| Gram-positive bacteria | 7 (23%) | 2 (7%) | 9 (15%) | 0.15 |
| Gram-negative bacteria | 13 (43%) | 18 (60%) | 31 (53%) | 0.20 |
| Fungal infection | 1 (3%) | 2 (7%) | 3 (5%) | 1.00 |
| Mycobacterium | 1 (3%) | 0 (0%) | 1 (2%) | 1.00 |
| Other | 0 (0%) | 1 (3%) | 1 (2%) | 1.00 |
| Site of infection | ||||
| Central nervous system | 2 | 0 | 2 (3%) | 0.14 |
| Respiratory tract | 6 | 12 | 18 (31%) | 0.11 |
| Gastrointestinal tract | 9 | 6 | 15 (25%) | 0.33 |
| Genitourinary tract | 3 | 3 | 6 (10%) | 0.97 |
| Musculoskeletal | 0 | 3 | 3 (5%) | 0.08 |
| Systemic infection | 5 | 4 | 9 (15%) | 0.68 |
| Other | 5 | 3 | 8 (14%) | 0.42 |
Data represent sample size and column percentage
PMX-HP polymyxin B hemoperfusion
aFisher’s exact test for categorical variables; Student’s t test or Kruskal–Wallis test for continuous variables