Comparison of multiple against single pain intensity measurements in complex regional pain syndrome type I: Analysis of 54 patients

Tymour Forouzanfar*, Marius Kemler, Alfons G.H. Kessels, Albere J.A. Köke, Maarten Van Kleef, Wilhelm E.J. Weber

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


Objective: To describe the comparison of multiple and single pain ratings in patients with complex regional pain syndrome type I (CRPS I). Design: Correlation, agreement, and reliability analyses were performed between the average pain intensity measured 3 times a day over a course of 4 days and one single pain rating (designated the "recalled average" pain, as assessed by the patient) before treatment and at 1-, 3-, and 6-month periods after treatment. Patients: The patient population consisted of 54 patients with CRPS I in a randomized trial. Results: The results show that both measurements correlate and have excellent agreement. Furthermore, both ratings measure significant pain reduction after treatment; "recalled average" pain, however, reflects greater change in pain intensity. Conclusions: In patients with CRPS I a single pain rating is an accurate predictor of the average pain measured by a multiple pain-rating test. Moreover, both assessments are accurate enough to determine changes in pain over time with an effective treatment.

Original languageEnglish
Pages (from-to)234-237
Number of pages4
JournalClinical Journal of Pain
Issue number4
Publication statusPublished - 7 Aug 2002
Externally publishedYes

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