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Restless legs syndrome augmentation among Japanese patients receiving pramipexole therapy: Rate and risk factors in a retrospective study

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  • Masayoshi Takahashi
  • Shingo Nishida
  • Masaki Nakamura
  • Mina Kobayashi
  • Kentaro Matsui
  • Eiki Ito
  • Akira Usui
  • Yuichi Inoue

Abstract

To investigate the rate of and risk factors for restless legs syndrome (RLS) augmentation in Japanese patients receiving pramipexole (PPX) treatment. Records of 231 consecutive patients with idiopathic RLS who received PPX therapy for more than one month in a single sleep disorder center were analyzed retrospectively. Augmentation was diagnosed based on the Max Planck Institute criteria; associated factors were identified by logistic regression analysis. Mean age at PPX initiation was 60.6 ± 14.9 years and mean treatment duration was 48.5 ± 26.4 months. Augmentation was diagnosed in 21 patients (9.1%). Daily PPX dose and treatment duration were significantly associated with augmentation. By analyzing the receiver operating characteristic curve, a PPX dose of 0.375 mg/day was found to be the optimal cut-off value for predicting augmentation. After stratifying patients according to PPX treatment duration, at median treatment duration of 46 months, optimal cut-off values for daily doses were 0.375 and 0.500 mg/day for

Suggested Citation

  • Masayoshi Takahashi & Shingo Nishida & Masaki Nakamura & Mina Kobayashi & Kentaro Matsui & Eiki Ito & Akira Usui & Yuichi Inoue, 2017. "Restless legs syndrome augmentation among Japanese patients receiving pramipexole therapy: Rate and risk factors in a retrospective study," PLOS ONE, Public Library of Science, vol. 12(3), pages 1-8, March.
    • Handle: RePEc:plo:pone00:0173535
    DOI: 10.1371/journal.pone.0173535
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