| Microbial organism | Acute uncomplicated cystitis (%)* | Acute uncomplicated pyelonephritis (%) | Complicated UTI (%) | Catheter-associated UTI (%) |
|---|---|---|---|---|
| Escherichia coli | 68 | 89 | 32 | 24 |
| Staphylococcus saprophyticus | 8 | 0 | 1 | 0 |
| Proteus | 6 | 4 | 4 | 6 |
| Klebsiella | 4 | 4 | 5 | 8 |
| Enterococci | 3 | 0 | 22 | 7 |
| Pseudomonas | 0 | 0 | 20 | 9 |
| Mixed | 3 | 5 | 10 | 11 |
| Yeast | 0 | 0 | 15 | 8 |