A prototype for evidence synopsis for hand-held computers* Based on: Review: antibiotics do not lead to general improvement in upper respiratory tract infections. Evidence-Based Nursing 1999;2:78. Abstract of: Arroll B, Kenealy T. Antibiotics versus placebo in the common cold. Cochrane review, 8 Apr 1998. In: Cochrane Library. Oxford: Update Software.

QuestionStudy groupsOutcomes at 1–7 days (5 trials)Weighted EERWeighted CERRBR (95% CI)NNH
Conclusion: in patients with acute upper respiratory infection, antibiotics are no more beneficial in terms of general improvement than placebo and are associated with a non-significant increase in adverse effects.
*EER  =  experimental event rate, CER  =  control event rate, RBR  =  relative benefit reduction, RRI  =  relative risk increase, NS  =  not statistically significant.; RBR, RRI, NNH, and CI calculated from data in article.
In patients with acute respiratory tract infections, what is the efficacy and safety of antibiotics (compared with placebo) in curing infection and improving nasopharyngeal symptoms?Experimental: antibiotics (tetracycline, penicillin, ampicillin, amoxicillin, erythromycin, and cotrimoxizole) Control: placeboGeneral improvement51.2%52.5%2% (−5 to 10)NS
RRI (CI)
Adverse effects9.7%3.6%82% (−25 to 340)NS