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RESEARCH ARTICLE Open Access Effect of duloxetine in patients with fibromyalgia: tiredness subgroups

By Laurence A Bradley, Robert Bennett, Irwin J Russell, Madelaine M Wohlreich, Fujun Wang, Deborah N D’souza and Harvey Moldofsky


Introduction: This study tested the hypothesis that baseline ratings of fatigue/tiredness would be negatively associated with the efficacy of duloxetine on measures of pain and functional ability in patients with fibromyalgia. Methods: A post hoc analysis of pooled data from 4 double-blind, placebo-controlled studies of duloxetine in fibromyalgia was performed. The fibromyalgia impact questionnaire (FIQ) tiredness item score (0 to 10 scale) was used to define tiredness subgroups. Patients were stratified into 3 subgroups: mild (0 to 3), moderate (4 to 6), an

Year: 2013
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