1. ItchApp©: An App-based eDiary for Assessment of Chronic Pruritus in Clinical Trials.
- Author
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GERNART, Marvin, TSIANAKAS, Athanasios, ZEIDLER, Claudia, RIEPE, Claudia, OSADA, Nani, PIHAN, David, and STÄNDER, Sonja
- Subjects
ITCHING ,CLINICAL trials ,ELECTRONIC health records ,RANDOMIZED controlled trials ,DIAGNOSIS - Abstract
Performing a reliable assessment of chronic pruritus remains a challenge. Electronic diaries are often used, but many of the scales have not been validated. ItchApp
© was developed for Android smartphones in order to address this lack. A total of 40 subjects with chronic pruritus completed questionnaires both on paper and with ItchApp© (verbal rating scale, numerical rating scale, dynamic pruritus score) in order to validate the software application. Strong correlations were found for test–retest reliability (intraclass correlation coefficient: 0.865-0.977) and convergent validity (Spearman's r: 0.442-0.924). A feasibility questionnaire for ItchApp© revealed a high level of user friendliness and compliance. This was confirmed in a randomized controlled trial with 68 subjects, for which the clinically important difference in the numerical rating scale values for ItchApp© was calculated (2.61 points). In summary, ItchApp© is a recently developed eDiary that can provide experts with a reliable evaluation of patients with chronic pruritus. It will be made available for future clinical trials. [ABSTRACT FROM AUTHOR]- Published
- 2017
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