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Table 4 Internal consistency

From: Development of a self-reporting questionnaire, BURMIG, to evaluate the burden of migraine

 

Raw

Standardized

ID Migraine Screener™

0.26

0.26

WHODAS II questionnaire

0.80

0.91

MIDAS questionnaire

0.68

0.74

PHQ-9 questionnaire

0.85

0.84