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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