Article

Using Item Response Theory (IRT) to Improve the Efficiency of the Simple Clinical Colitis Activity Index (SCCAI) for patients with ulcerative colitis

2020-12-29

Abstract excerpt

<h4>Background: </h4> The SCCAI was designed to facilitate assessment of disease activity in ulcerative colitis (UC). We aimed to interrogate the metric properties of individual items of the SCCAI using item response theory (IRT) analysis, to simplify and improve its performance. MethodsThe original 9-item SCCAI was collected through TrueColours, a real-time software platform which allows remote entry and monitori...

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Literature Corpus work: 899c13ee-39c8-5048-a1fa-8c96c0b35548
DOI: 10.21203/rs.3.rs-60494/v2

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