Global, Prospective, Observational Study Measuring Disease Burden and Suffering in Patients with Ulcerative Colitis Using the Pictorial Representation of Illness and Self-Measure Tool
Abstract
Background: The understanding the Impact of ulcerative COlitis aNd Its assoCiated disease burden on patients study [ICONIC] was a 2-year, global, prospective, observational study evaluating the cumulative burden of ulcerative colitis [UC] using the Pictorial Representation of Illness and Self-Measure [PRISM] tool that is validated to measure suffering, but not previously used in UC. Methods: ICONIC enrolled unselected outpatient clinic attenders with recent-onset UC.
Patient- and physician-reported outcomes including PRISM, the Short Inflammatory Bowel Disease Questionnaire [SIBDQ], the Patient Health Questionnaire [PHQ-9], and the Simple Clinical Colitis Activity Indexes [patient: P-SCCAI; physician: SCCAI] were collected at baseline and follow-up visits every 6 months. Correlations between these measures were assessed using Spearman's rank correlation coefficient.
Results: Overall, 1804 evaluable patients had >=1 follow-up visit. Over 24 months, mean [SD] disease severity measured by P-SCCAI/SCCAI reduced significantly from 4.2 [3.6]/3.0 [3.0] to 2.4 [2.7]/1.3 [2.1] [p=0.60, p=0.50 [positive correlations], p<0.0001).
Conclusion: Over 2 years, disease burden and suffering, quantified by PRISM, improved in patients with relatively early UC. Physicians underestimated burden and suffering compared with patients.
PRISM correlated with other measures of illness perception in patients with UC, supporting its use as an endpoint reflecting patient suffering