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Table 3 Matrix of issues experienced by respondents versus items of the EQ-5D, ICECAP-O and ASCOT

From: Exploration of the content validity and feasibility of the EQ-5D-3L, ICECAP-O and ASCOT in older adults

  EQ-5D ICECAP-O ASCOT
Mobility Self-care Usual activities Pain/discomfort Anxiety/depression Attachment Security Role Enjoyment Control Control over daily life Personal cleanliness and comfort Food and drink Personal safety Social participation and involvement Occupation Accommodation cleanliness and comfort Dignity (filter question) Dignity
Comprehension phase 
Understanding the words
- Odd wording             /        
- Difficult wording                   /// /
Interpreting intended scope and meaning
- Difficult interpretation of item         ////   / //      /   ////// //
- Wrong interpretation of item     /     ///            
- Narrow interpretation of item    ///// ////// ////// /////// ///////    ////     //////    ///////   
Selecting and reporting phase
Mapping
- Different answers for different aspects / /     /     //          
- Response option partly applicable             //    ///     
- Irrelevant response option       /         // ////     
- Missing intermediate response options //         /   /         
- Similar response options          /    /   /   //    
- Disagreement with order of response options           /    ///   /     
Editing
- Positive responding //   /// // // //// /   // //// /// /   / // /    
  1. Note. / = issue experienced by 1 respondent
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