The Clinical journal of pain
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Meta Analysis
Predictors of placebo response in pooled lamotrigine neuropathic pain clinical trials.
One limitation of neuropathic pain clinical trials is the often large and variable extent of response in the placebo group, possibly obscuring true medication effects. We pooled data from 252 individuals in the placebo arms of 3 clinical trials of lamotrigine in patients with neuropathic pain to examine the relationship of baseline patient and study site characteristics with 12-week change in the Pain Intensity Numerical Rating Scale score (DeltaPI-NRS). The 574 patients in the pooled lamotrigine treatment arms were used as a replication dataset. ⋯ These results suggest that both patient and study site characteristics can influence the response in the placebo arms of neuropathic pain studies.
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To investigate whether comorbid major depressive disorder (MDD) influenced the efficacy and safety of duloxetine in treating fibromyalgia (FM). ⋯ Duloxetine was effective in reducing pain and other symptoms in FM patients with and without MDD and demonstrated a similar safety profile for both groups.
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Provoked vestibulodynia is believed to be the most frequent cause of vulvodynia in women of childbearing age, with prevalence rates of up to 12% in the general population. Despite this high prevalence and the fact that vestibulodynia impacts negatively on quality of life, in particular sexual functioning, there has been a paucity of sound research to elucidate the condition's etiology. More specifically, few studies have focused on the role of psychologic factors in the experience of vulvo-vaginal pain and associated sexual impairment. ⋯ Findings support a theoretical model of vestibulodynia as a pain disorder influenced among others by cognitive and affective factors.
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Despite the growing number of ambulatory operations knowledge of predictive factors of postoperative pain after ambulatory surgery is limited. Therefore, the aim of this study was to identify predictive factors of postoperative pain after ambulatory surgery. ⋯ Several predictive factors of postoperative pain after ambulatory surgery were identified in this study. These factors should be taken into account when planning postoperative analgesia for ambulatory surgery.