Received: June 27, 2017 Revision received: June 30, 2017 Accepted after revision: December 13, 2017
BKK Med J 2018;14(1):10-15.
The aim of this study is to evaluate the comprehensibility, internal consistency, patient-physician reliability, and test-retest reliability of the Thai version of Migraine Disability Assessment (Thai-MIDAS) questionnaire in Thai migraine sufferers.
Study participants were recruited from patients diagnosed with migraine headache according to International Classification of Headache Disorders version 2 (ICHD-2) criteria who attended the Headache Clinic at Bangkok Hospital headquarters. Standard forward and backward translation procedures were used to translate the MIDAS questionnaire into the Thai-MIDAS version. Patients completed the Thai-MIDAS questionnaire at baseline (visit 1), after meeting the physician (visit 2), and at the two-week follow up (visit 3) to assess disease severity and comprehensibility, internal consistency, as well as test-retest reliability.
A total of 82 patients, aged between 15 and 54 years were enrolled in the study (71 females and 11 males). At baseline, most of the patients had severe migraine disability (MIDAS grade IV) and severe pain score. All 5 items of the Thai-MIDAS questionnaire demonstrated excellent internal consistency (ICC 0.95; 95% CI 0.91-0.99). The total Thai-MIDAS score showed good test-retest reliability by Pearson correlation coefficient (r = 0.81; 95% CI 0.69-0.88, p = 0.05).
These findings demonstrated that the Thai translation of MIDAS is equivalent to the English version of MIDAS in terms of internal consistency and test-retest reliability. Physicians can reliably use the self-administered tool, the Thai-MIDAS questionnaire, to assess the severity and disability of migraine in Thai patients.
MIDAS questionnaire, migraine, reliability
Kiratikorn Vongvaivanich, MD
Bangkok Hospital Headquater,
2 Soi Soonvijai 7, New Petchburi Rd., Bangkok 10310, Thailand