Single-dose antibiotic treatment for uncomplicated urinary tract infections. Less for less?

Arch Intern Med. 1985 Sep;145(9):1672-8.


Because of the many differences among studies of single-dose antimicrobial therapy for uncomplicated urinary tract infection in women, we reviewed the 14 randomized controlled trials on this subject. Twelve concluded that single-dose therapy was as effective as conventional multiple-dose therapy. Although the studies were carefully conducted, none both reported and ascertained in a blinded manner the incidence of adverse drug reactions. Also, no study included enough patients to prevent type II error. To circumvent the problem of having too few patients in each study, we used a rational strategy for pooling the data from the reviewed studies. Single-dose amoxicillin (3 g) was significantly less effective than conventional multidose therapy (69% vs 84%), while single-dose sulfamethoxazole-trimethoprim (two or three double-strength tablets) was indistinguishable from multidose, although there still were too few patients to exclude type II error. More research on this subject is needed with greater attention to sample size and blinded ascertainment of adverse reactions.

Publication types

  • Clinical Trial
  • Review

MeSH terms

  • Anti-Bacterial Agents / administration & dosage*
  • Anti-Bacterial Agents / adverse effects
  • Anti-Bacterial Agents / therapeutic use
  • Clinical Trials as Topic
  • Humans
  • Random Allocation
  • Research Design
  • Statistics as Topic
  • Urinary Tract Infections / drug therapy*


  • Anti-Bacterial Agents