1921
Volume 76, Issue 2
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645

Abstract

We used logistic regression to assess effectiveness of primaquine as anti-relapse therapy using data extracted from studies of relapses in Brazil, India, and Thailand. The risk of relapse in Thailand was 10 times that in India and twice that in Brazil. In comparison with no primaquine treatment, the risk of relapse decreased by approximately 80% for a total adult primaquine regimen of 210 mg and by ≥95% for regimens of 315 mg and 420 mg. In addition, we used logistic regression to estimate the risk of relapse according to weight-based primaquine dose using data from case studies. There was a three-fold increase in the likelihood of successful treatment of each additional milligram of primaquine per kilogram of body weight. Tailoring primaquine therapy to a region requires consideration of factors including body weight, natural relapse rates, and local response to primaquine.

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2007-02-01
2017-11-22
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  • Received : 14 Aug 2006
  • Accepted : 24 Oct 2006

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