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Table 2 Summary of confirmatory factor analysis and reliability

From: Migraine-Specific Quality of Life Questionnaire Chinese version 2.1 (MSQv2.1-C): psychometric evaluation in patients with migraine

Construct-item

μ

SD

λ

M

SD

Range

αa

ICCs

ρ

Role Restrictive

   

67.7

19.0

11–100

0.93

0.72

0.74

 MSQ01

4.50

1.092

0.83

      

 MSQ02

4.27

1.172

0.86

      

 MSQ03

4.61

1.055

0.88

      

 MSQ04

4.69

1.032

0.85

      

 MSQ05

4.32

1.083

0.85

      

 MSQ06

4.23

1.216

0.85

      

 MSQ07

4.08

1.253

0.80

      

Role Preventive

   

80.0

17.1

10–100

0.86

0.75

0.78

 MSQ08

5.02

0.931

0.88

      

 MSQ09

5.06

1.049

0.82

      

 MSQ10

5.02

0.982

0.91

      

 MSQ11

4.90

1.049

0.81

      

Emotion Function

   

80.4

20.0

0–100

0.81

0.69

0.76

 MSQ12

4.43

1.272

0.71

      

 MSQ13

5.29

1.136

0.96

      

 MSQ14

5.35

1.103

0.88

      
  1. Abbreviation: α Cronbach’s α value, λ indicator loading coefficient, μ mean value, ρ Spearman’s ρ correlation coefficient
  2. aThe Cronbach’s α for the entire scale (14 items) is 0.95