Development and validation of a composite score based on clinically meaningful events for the opioid-related symptom distress scale

Kitty S. Chan, Wen Hung Chen, T. J. Gan, Ray Hsieh, Connie Chen, Mani Lakshminarayanan, Dennis A. Revicki

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: To develop and validate a composite score based on clinically meaningful events (CMEs) for the opioid-related symptom distress scale (OR-SDS) that would be appropriate for use in postoperative clinical trials. Methods: Secondary analysis of data from 2 multi-site Phase III randomized clinical safety trials: a general surgery trial (N = 1,050) and a coronary artery bypass graft surgery trial (N = 1,636). Validating measures include daily opioid consumption and physician and patient global evaluations of study medication. We empirically defined CMEs for each symptom, using factor analysis and an area under the receiver-operating characteristic analysis of the severity and frequency items of the OR-SDS. Construct validity was examined by testing hypotheses of relationships between composite CME scores and opioid consumption and physician and patient evaluations of study medication. Results: Hypotheses supporting the construct validity of the CME-based composite score were confirmed. Significant associations were found between higher numbers of CMEs with greater opioid consumption and lower likelihood of a positive evaluation of the study medication. Conclusions: The OR-SDS CME-based composite score demonstrates evidence of construct validity and appears appropriate for use in evaluating patients' opioid-related side effect burden in future postoperative clinical trials.

Original languageEnglish (US)
Pages (from-to)1331-1340
Number of pages10
JournalQuality of Life Research
Volume18
Issue number10
DOIs
StatePublished - Dec 1 2009

Keywords

  • Adverse events
  • Opioid analgesics
  • Postoperative pain
  • Validation studies

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health

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