• Marieke H J van den Beuken-van Everdingen, Laura M J Hochstenbach, Elbert A J Joosten, Vivianne C G Tjan-Heijnen, and Daisy J A Janssen.
• Center of Expertise for Palliative Care, Maastricht University Medical Center (MUMC+), Maastricht, The Netherlands; Department of Anesthesiology and Pain Management, Maastricht University Medical Center (MUMC+), Maastricht, The Netherlands. Electronic address: m.vanden.beuken@mumc.nl.
• J Pain Symptom Manage. 2016 Jun 1; 51 (6): 1070-1090.e9.

ContextCancer pain has a severe impact on quality of life and is associated with numerous psychosocial responses. Recent studies suggest that treatment of cancer pain has improved during the last decade.ObjectivesThe aim of this review was to examine the present status of pain prevalence and pain severity in patients with cancer.MethodsA systematic search of the literature published between September 2005 and January 2014 was performed using the databases PubMed, Medline, Embase, CINAHL, and Cochrane. Articles in English or Dutch that reported on the prevalence of cancer pain in an adult population were included. Titles and abstracts were screened by two authors independently, after which full texts were evaluated and assessed on methodological quality. Study details and pain characteristics were extracted from the articles with adequate study quality. Prevalence rates were pooled with meta-analysis; meta-regression was performed to explore determinants of pain prevalence.ResultsOf 4117 titles, 122 studies were selected for the meta-analyses on pain (117 studies, n = 63,533) and pain severity (52 studies, n = 32,261). Pain prevalence rates were 39.3% after curative treatment; 55.0% during anticancer treatment; and 66.4% in advanced, metastatic, or terminal disease. Moderate to severe pain (numerical rating scale score ≥5) was reported by 38.0% of all patients.ConclusionDespite increased attention on assessment and management, pain continues to be a prevalent symptom in patients with cancer. In the upcoming decade, we need to overcome barriers toward effective pain treatment and develop and implement interventions to optimally manage pain in patients with cancer.Copyright © 2016 American Academy of Hospice and Palliative Medicine. Published by Elsevier Inc. All rights reserved.

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