Evid Based Nurs 5:119 doi:10.1136/ebn.5.4.119
  • Assessment (screening or diagnosis)

Review: specific combinations of symptoms effectively rule in the diagnosis of urinary tract infection based on history alone

Table 1

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)

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