Responsiveness of the Problem Areas In Diabetes (PAID) questionnaire
Version of Record online: 7 JAN 2003
Volume 20, Issue 1, pages 69–72, January 2003
How to Cite
Welch, G., Weinger, K., Anderson, B. and Polonsky, W. H. (2003), Responsiveness of the Problem Areas In Diabetes (PAID) questionnaire. Diabetic Medicine, 20: 69–72. doi: 10.1046/j.1464-5491.2003.00832.x
- Issue online: 7 JAN 2003
- Version of Record online: 7 JAN 2003
- Accepted 19 June 2002
- diabetes mellitus;
- emotional distress;
Aim Responsiveness (sensitivity to change over time) is a key psychometric quality for an outcome measure. We examined the responsiveness of the Problem Areas In Diabetes (PAID) questionnaire, a measure of diabetes-specific emotional distress.
Methods PAID data were obtained from seven diabetes intervention studies following a literature search that included both published papers and conference abstracts. To estimate responsiveness we used two indices: (i) a statistical test (the dependent t-test), and (ii) a commonly used effect size index (Cohen's d).
Results Mean patient PAID scores improved from baseline to follow-up for all seven studies. Specifically, t-statistics ranged from t= 8.5 (P < 0.001) to t= 2.1 (P < 0.06). Effect size results ranged from 0.32 (i.e. small) for a disease management intervention to 0.65 (i.e. moderate) for an intensive medical/educational intervention.
Conclusions Despite the pilot nature of the studies, the pattern of findings provided strong support for the responsiveness of the PAID. Information on responsiveness helps clinical researchers select measures, accurately estimate sample size to ensure adequate statistical power, and prioritize outcomes to be assessed.