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Table 3 Rating on 16 items of QOL by five experts: Content validity index

From: Development and psychometric properties of the Thai Graves’ ophthalmopathy quality of life (GO-QOL) questionnaire

QO-QoL Questionnaire

Relevant (grade 3 or 4)

Not relevant (grade 1 or 2)

Content validity index (item CVI)

Q1

4

1

0.8

Q2

4

1

0.8

Q3

5

0

1.0

Q4

5

0

1.0

Q5

5

0

1.0

Q6

5

0

1.0

Q7

5

0

1.0

Q8

5

0

1.0

Functioning

38

2

0.95

Q9

5

0

1.0

Q10

5

0

1.0

Q11

5

0

1.0

Q12

5

0

1.0

Q13

5

0

1.0

Q14

5

0

1.0

Q15

5

0

1.0

Q16

5

0

1.0

Appearance

40

0

1.0

Total

78

2

0.97

  

S-CVI/Ave

0.97

  

S-CVI/UA

0.87

  1. S-CVI/Ave, Scale-content validity index, averaging calculation method
  2. S-CVI/UA, Scale-content validity index, universal agreement calculation method