Positive likelihood ratios (+LRs) for symptoms and signs that increased the probability of urinary tract infection in women*
| Symptom or sign | Summary +LR (95% CI) |
|---|---|
| *Diagnostic terms defined in glossary. | |
| Dysuria | 1.5 (1.2 to 2.0) |
| Frequency | 1.8 (1.1 to 3.0) |
| Haematuria | 2.0 (1.3 to 2.9) |
| Back pain | 1.6 (1.2 to 2.1 |
| Costovertebral angle tenderness | 1.7 (1.1 to 2.5) |