The Comprehensive Anxiety and Parkinson’s Scale (CAPS): co-development and initial validation of the long (CAPS-54) and short (CAPS-24) versions

Purpose Anxiety is a prevalent symptom of Parkinson's disease, but is often under-recognised and challenging to characterise. The present study aimed to develop a comprehensive new scale that characterised the specific and nuanced experience of anxiety in people living with Parkinson's disease. A shortened version of the scale was also developed. The psychometric properties of both versions of the scale were assessed for reliability and validity.