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Review: fever and cough are the most accurate single tests for diagnosing influenza

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Q In patients with influenza-like illnesses, what is the accuracy of clinical signs and symptoms for diagnosing influenza?


Embedded ImageData sources:

Medline (1966 to September 2004) and bibliographies of relevant articles.

Embedded ImageStudy selection and assessment:

published studies on the assessment of clinical signs and symptoms as predictors of influenza; prospective cohort, randomised controlled trial, or meta-analysis study designs; ⩾1 outcome being influenza type A or B infection; and independent blinded comparison of signs or symptoms with a criterion standard in consecutive patients who might have influenza. Quality assessment criteria included study design and validity of criterion standard.

Embedded ImageOutcomes:

likelihood ratios and …

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  • For correspondence: Dr W P McKinney, Department of Medicine, University of Louisville, Louisville, KY, USA.

  • Source of funding: not stated.