• J Pain · Nov 2013

    Patients' perception of postoperative pain management: validation of the International Pain Outcomes (IPO) questionnaire.

    • Judith Rothaug, Ruth Zaslansky, Matthias Schwenkglenks, Marcus Komann, Renée Allvin, Ragnar Backström, Silviu Brill, Ingo Buchholz, Christoph Engel, Dominique Fletcher, Lucian Fodor, Peter Funk, Hans J Gerbershagen, Debra B Gordon, Christoph Konrad, Andreas Kopf, Yigal Leykin, Esther Pogatzki-Zahn, Margarita Puig, Narinder Rawal, Rod S Taylor, Kristin Ullrich, Thomas Volk, Maryam Yahiaoui-Doktor, and Winfried Meissner.
    • Department of Anesthesiology and Intensive Care, Friedrich-Schiller University Hospital, Jena, Germany. Electronic address: judith.rothaug@med.uni-jena.de.
    • J Pain. 2013 Nov 1; 14 (11): 1361-70.

    UnlabelledPAIN OUT is a European Commission-funded project aiming at improving postoperative pain management. It combines a registry that can be useful for quality improvement and research using treatment and patient-reported outcome measures. The core of the project is a patient questionnaire-the International Pain Outcomes questionnaire-that comprises key patient-level outcomes of postoperative pain management, including pain intensity, physical and emotional functional interference, side effects, and perceptions of care. Its psychometric quality after translation and adaptation to European patients is the subject of this validation study. The questionnaire was administered to 9,727 patients in 10 languages in 8 European countries and Israel. Construct validity was assessed using factor analysis. Discriminant validity assessment used Mann-Whitney U tests to detect mean group differences between 2 surgical disciplines. Internal consistency reliability was calculated as Cronbach's alpha. Factor analysis resulted in a 3-factor structure explaining 53.6% of variance. Cronbach's alpha at overall scale level was high (.86), and for the 3 subscales was low, moderate, or high (range, .53-.89). Significant mean group differences between general and orthopedic surgery patients confirmed discriminant validity. The psychometric quality of the International Pain Outcomes questionnaire can be regarded as satisfactory.PerspectiveThe International Pain Outcomes questionnaire provides an instrument for postoperative pain assessment and improvement of quality of care, which demonstrated good psychometric quality when translated into a variety of languages in a large European and Israeli patient population. This measure provides the basis for the first comprehensive postoperative pain registry in Europe and other countries.Copyright © 2013. Published by Elsevier Inc.

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