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Table 2 The results for the content and face validity of Persian version of CDAT questionnaire

From: Psychometric properties of the Persian version of the celiac disease adherence test questionnaire

Items

CVI*

CVR**

IS***

Have you been bothered by low energy level during the past 4 weeks?

1

1

4.90

Have you been bothered by headaches during the past 4 weeks?

0.97

0.82

4.20

I am able to follow a GFD when dining outside my home

1

1

4.90

Before I do something I carefully consider the consequences

0.93

0.82

4.18

I do not consider myself a failure

0.90

1

4.09

How important to your health are accidental gluten exposures?

1

1

5

Over the past 4 weeks, how many times have you eaten foods containing gluten on purpose?

1

1

5

The mean of whole questionnaire

0.97

0.95

4.61

  1. CVI Content validity index, CVR Content validity ratio, IS Impact score, GFD Gluten-free diet
  2. *values > 0.56 are acceptable; ** values > 0.79 are acceptable; *** values> 1.5 are acceptable