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Table 4 Content validity index (I-CVI) for item relevancy and importance (face validity)

From: Development and validation of patient diabetes knowledge questionnaire (PDKQ)

Items

Relevancy

Importance

Relevant (rating 3 or 4)

Not relevant (rating 1 or 2)

I-CVI

Interpretation

Important (rating 3 or 4)

Not important (rating 1 or 2)

I-CVI

Interpretation

1

6

0

1

Relevant

6

0

1

Important

3

4

2

0.67

Eliminated

5

1

0.83

Important

4

6

0

1

Relevant

6

0

1

Important

6

6

0

1

Relevant

6

0

1

Important

7

6

0

1

Relevant

5

1

0.83

Important

8

6

0

1

Relevant

6

0

1

Important

9

6

0

1

Relevant

6

0

1

Important

10

6

0

1

Relevant

6

0

1

Important

11

5

1

0.83

Relevant

4

2

0.67

Eliminated

12

5

1

0.83

Relevant

4

2

0.67

Eliminated

14

4

2

0.67

Eliminated

2

4

0.33

Eliminated

15

5

1

0.83

Relevant

6

0

1

Important

16

6

0

1

Relevant

6

0

1

Important

17

6

0

1

Relevant

6

0

1

Important

18

6

0

1

Relevant

6

0

1

Important

19

6

0

1

Relevant

6

0

1

Important

20

6

0

1

Relevant

6

0

1

Important

22

5

1

0.83

Relevant

6

0

1

Important

23

5

1

0.83

Relevant

4

2

0.67

Eliminated

27

6

0

1

Relevant

6

0

1

Important

28

6

0

1

Relevant

6

0

1

Important

29

6

0

1

Relevant

5

1

0.83

Important

30

4

2

0.67

Eliminated

4

2

0.67

Eliminated

33

4

2

0.67

Eliminated

4

2

0.67

Eliminated

34

5

1

0.83

Relevant

4

2

0.67

Eliminated

35

6

0

1

Relevant

6

0

1

Important

36

5

1

0.83

Relevant

6

0

1

Important

37

6

0

1

Relevant

6

0

1

Important