• Arthur A Stone, Joan E Broderick, Saul S Shiffman, and Joseph E Schwartz.
• Department of Psychiatry and Behavioral Science, Putnam Hall, South Campus, Stony Brook University, Stony Brook, NY 11794-8790, USA. arthur.stone@sunysb.edu
• Pain. 2004 Jan 1;107(1-2):61-9.

AbstractTo better understand the association between pain recalled over a previous week and the average of multiple momentary reports of pain taken during the same period, 68 patients with chronic pain completed both weekly recall and momentary reports over a 2-week period and assessed their change in pain over the 2 weeks. Pearson correlations and intraclass correlation coefficients were computed to index three different ways of comparing the measures on both a between-person and within-person basis. Between-person correspondence between weekly and momentary reports was generally moderate to high, but within-person correspondence was low. Judged change was only weakly related to changes over a week computed from weekly recall or from average momentary reports. Given the importance of within-person change for treatment studies, these results indicate a serious nonequivalence in weekly recall and averaged momentary reports of pain.

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