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  • Title: Comparative efficacy of 5 days of dirithromycin and 7 days of erythromycin in skin and soft tissue infections.
    Author: Wasilewski MM, Wilson MG, Sides GD, Stotka JL.
    Journal: J Antimicrob Chemother; 2000 Aug; 46(2):255-62. PubMed ID: 10933649.
    Abstract:
    We investigated the comparative efficacy and safety of dirithromycin and erythromycin in the treatment of skin and soft tissue infections in this double-blind, randomized, multicentre study, in which 439 patients were randomized to treatment with dirithromycin (500 mg daily for 5 days) or erythromycin (250 mg every 6 h for 7 days). All randomized patients were included in the termination analysis, which showed that 187 of 220 (85.0%) dirithromycin recipients and 177 of 219 (80.8%) erythromycin recipients were clinically cured or improved (95% confidence interval (CI) -3.0% to +11.4%). In the termination analysis of the 211 bacteriologically evaluable patients, clinical cure or improvement occurred in 83 of 100 (83%) dirithromycin recipients and in 89 of 111 (80.2%) erythromycin recipients (95% CI -7.8% to +13.4%), and bacteriological eradication occurred in 85 of 100 (85%) and 89 of 111 (80.2%), respectively. Adverse events were similar in incidence and nature between the two groups, except that there was less nausea with dirithromycin (3.6% versus 8.2%; P = 0.042). Ten of 220 (4.5%) dirithromycin recipients and 27 of 219 (12.3%) erythromycin recipients returned >20% of their prescribed medication (P = 0.033). In the treatment of skin and soft tissue infections, dirithromycin (500 mg daily for 5 days) was comparable in efficacy to, and caused significantly less nausea than, erythromycin (250 mg every 6 h for 7 days). Compliance with the dirithromycin regimen was superior to that with the erythromycin regimen.
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