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Table 2 Cross-item analysis summary of the response errors

From: Content validation of the Kamath and Stothard questionnaire for carpal tunnel syndrome diagnosis: a cognitive interviewing study

Questions themes

Q1

Q2

Q3

Q4

Q5

Q6

Q7

Q8

Q9

Total number of errors for each category across all of the questions

C

 

E:2

E:5

E:5

P:3

E:4

  

E:6

E:25

P:3

P:3

P:5

 

P:1

  

P:4

P:16

T:41

R

E:6

E:5

E:3

  

E:6

E:2

E:1

 

E:23

P:1

P:1

P:1

  

P:5

   

P:8

T:31

IR

   

E:3

     

E:3

RP

     

P:1

  

P:1

P:2

PM

E:1

      

E:2

 

E:3

Total number of errors for each question:

E:7

E:7

E:8

E:8

 

E:10

E:2

E:3

E:6

E:54

P:1

P:4

P:4

P:5

P:3

P:17

  

P:5

P:26

T:80

  1. E experts, P patients, T total, C comprehension/clarity, R relevance, IR inadequate response definitions, RP reference point, PM perspective modifier
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