• Shannon M Smith, Matthew Hunsinger, Andrew McKeown, Melissa Parkhurst, Robert Allen, Stephen Kopko, Yun Lu, Hilary D Wilson, Laurie B Burke, Paul Desjardins, Michael P McDermott, Bob A Rappaport, Dennis C Turk, and Robert H Dworkin.
• Department of Anesthesiology, University of Rochester School of Medicine and Dentistry, Rochester, New York. Electronic address: shannon1_smith@urmc.rochester.edu.
• J Pain. 2015 Apr 1;16(4):299-305.

UnlabelledPain intensity assessments are used widely in human pain research, and their transparent reporting is crucial to interpreting study results. In this systematic review, we examined reporting of human pain intensity assessments and related elements (eg, administration frequency, time period assessed, type of pain) in all empirical pain studies with adult participants in 3 major pain journals (ie, European Journal of Pain, Journal of Pain, and Pain) between January 2011 and July 2012. Of the 262 articles identified, close to one-quarter (24%) ambiguously reported the pain intensity assessment. Elements related to the pain intensity assessment were frequently not reported: 31% did not identify the time period participants were asked to rate, 43% failed to report the type of pain intensity rated, and 58% did not report the specific location or pain condition rated. No differences were observed between randomized clinical trials and experimental (eg, studies involving experimental manipulation without random group assignment and blinding) and observational studies in reporting quality. The ability to understand study results, and to compare results between studies, is compromised when pain intensity assessments are not fully reported. Recommendations are presented regarding key details for investigators to consider when conducting and reporting pain intensity assessments in human adults.PerspectiveThis systematic review demonstrates that publications of pain research often incompletely report pain intensity assessments and their details (eg, administration frequency, type of pain). Failure to fully report details of pain intensity assessments creates ambiguity in interpreting research results. Recommendations are proposed to increase transparent reporting.Copyright © 2015 American Pain Society. Published by Elsevier Inc. All rights reserved.

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