Assessing the validity, responsiveness and reliability of the Recap measure of eczema control.

Research comparing the effectiveness of different eczema treatments is limited by inconsistency in both outcomes assessed and the measures used. HOME (Harmonising Outcome Measures for Eczema) recommends a core set of outcomes to be reported in all trials of eczema treatments.1 RECAP (RECap for AtoPic eczema) is a seven-item patient-reported instrument recommended for capturing eczema control.2 Initial validation work is encouraging, but RECAP's validity in different populations and the reliability and responsiveness is uncertain.2,3.