Table 3.
Biofilm formation patterns of bacterial isolates among urinary catheterized inpatients of JUMC, Southwest Ethiopia, from February to August 2016.
| Bacterial isolates | Biofilm formation patterns | |||||
|---|---|---|---|---|---|---|
| BF | NBF (%) | Chi-square test | ||||
| SBF (%) | MBF (%) | WBF (%) | χ 2 | p value | ||
| E. coli (N=18) | 3 (16.7) | 2 (11.1) | 9 (50) | 4 (22.2) | 25.83 | 0.213 |
| Klebsiella spp. (N=12) | 5 (41.7) | 1 (8.3) | 3 (25) | 3 (25) | ||
| P. aeruginosa (N=3) | 2 (66.7) | 1 (33.3) | — | — | ||
| Proteus spp. (N=4) | 2 (50) | — | 2 (50) | — | ||
| Citrobacter spp. (N=3) | — | 1 (33.3) | 1 (33.3) | 1 (33.3) | ||
| Enterobacter spp. (N=2) | 1 (50) | 1 (50) | — | — | ||
| CONS (N=7) | 2 (28.6) | 3 (42.9) | — | 2 (28.6) | ||
| S. aureus (N=5) | 4 (80) | — | — | 1 (20) | ||
| Grand total (N=54) | 19 (35.2) | 9 (16.7) | 15 (27.8) | 11 (20.3) | ||
BF: biofilm formers; NBF: nonbiofilm formers; SBF: strong biofilm formers; MBF: moderate biofilm formers; WBF: weak biofilm formers; N: number; CONS: coagulase-negative staphylococci.