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Table 2 Impact coefficient, index and content validity ratio of the items of the Endometriosis Impact Questionnaire (EIQ)

From: Psychometric evaluation of the endometriosis impact questionnaire (EIQ) in an Iranian population

Items

Impact factor*

n = 10 women

CVI CVR

n = 10 experts

EIQ 1

4.5

1

1

EIQ 2

3.6

1

1

EIQ 3

3.2

1

1

EIQ 4

3.6

1

1

EIQ 5

2.7

0.96

1

EIQ 6

3.4

1

1

EIQ 7

2.3

0.83

0.80

EIQ 8

4

1

1

EIQ 9

2.8

1

1

EIQ 10

1.7

1

1

EIQ 11

3.2

1

1

EIQ 12

3.5

1

1

EIQ 13

2.5

0.96

1

EIQ 14

3

1

1

EIQ 15

3.3

0.86

0.80

EIQ 16

6

0.90

0.80

EIQ 17

4.2

1

1

EIQ 18

2.8

1

1

EIQ 19

2.4

1

1

EIQ 20

1.7

0.90

0.80

EIQ 21

3.4

0.90

0.80

EIQ 22

2.4

0.90

0.80

EIQ 23

2.7

0.90

0.80

EIQ 24

3.6

1

1

EIQ 25

4.3

1

1

EIQ 26

3.2

1

1

EIQ 27

2.7

0.96

1

EIQ 28

2.2

1

1

EIQ 29

3.8

1

1

EIQ 30

2.6

1

1

EIQ 31

2.1

1

1

EIQ 32

2.2

1

1

EIQ 33

1.9

1

1

EIQ 34

2

1

1

EIQ 35

3

1

1

EIQ 36

3.2

1

1

EIQ 37

2.7

1

1

EIQ 38

3.3

1

1

EIQ 39

2.7

1

1

EIQ 40

3.6

0.86

0.80

EIQ 41

4

1

1

EIQ 42

4.1

0.90

0.80

EIQ 43

3.4

1

1

EIQ 44

1.9

0.90

0.80

EIQ 45

2.7

1

1

EIQ 46

2.1

1

1

EIQ 47

2.2

1

1

EIQ 48

2.7

1

1

EIQ 49

1.9

0.90

0.80

EIQ 50

1.9

1

1

EIQ 51

2

1

1

EIQ 52

1.9

1

1

EIQ 53

2.7

0.90

0.80

EIQ 54

3.1

1

1

EIQ 55

2.7

1

1

EIQ 56

2.8

1

1

EIQ 57

1.9

0.93

1

EIQ 58

1.9

1

1

EIQ 59

1.9

0.96

1

EIQ 60

1.7

0.96

0.80

EIQ 61

0.18

0.83

0.80

EIQ 62

1.1

0.86

0.80

EIQ 63

0.44

0.90

0.80

Overall score of EIQ

 

0.97

0.94

  1. *Impact Score, Content Validity Index, Content Validity Ratio