MIDAS是用于评估头痛相关残疾程度的一种有效、可靠、简短的问卷调查方法。本次研究的目的是探讨波斯版MIDAS用于评估紧张型头痛（TTH）与偏头痛患者状况时的语言学可靠性以及评估这两组患者心理测量学特征的异同。
研究选择偏头痛和TTH（紧张型头痛）患者。在第一次随访中，进行了有关头痛症状的问卷调查，包括MIDAS和SF-36量表（the MOS 36-item Short Form Health Survey）。患者在基线访问后3周内进行的第二次和8周内进行的第三次访问中再次填写MIDAS。采用内部一致性信度（克伦巴赫α系数）和重测信度（斯皮尔曼相关系数）来评估调查问卷的信度。用于区分慢性和发作性头痛（包括偏头痛和紧张型头痛）的聚合效度和MIDAS区分慢性和发作性头痛（偏头痛和TTH）的能力也都被纳入评估范围。
结果发现，267名参与者中有64%的发作性偏头痛患者，13.5%慢性偏头痛患者，13.5%发作性TTH患者，9%慢性TTH患者。整个样本的内部一致性信度是0.8，TTH组是0.72，偏头痛组是0.82。第一次和第二次访问中的所有问题的重测信度在0.54到0.71之间。SF-36量表作为外部参照用来评估聚合效度。结果发现发作性头痛（包括发作性偏头痛和发作性紧张性头痛）的病人MIDAS得分显著低于慢性头痛（包括慢性偏头痛和慢性紧张性头痛）病人的得分。
研究结果表明，对于鉴别慢性或发作性偏头痛和紧张型头痛，波斯版的MIDAS是一份有效的、可信的调查问卷。
英文原文
Reliability and Validity of the Migraine Disability Assessment Scale among Migraine and Tension Type Headache in Iranian Patients.
Abstract
Introduction: MIDAS is a valid and reliable short questionnaire for assessment of headache related disability. Linguistic validation of Persian MIDAS and assessment of psychometric properties between tension type headache (TTH) and migraine were the aims of this study.
Methods: Patients with migraine or TTH were included. At the first visit, we administered a headache symptom questionnaire, MIDAS, and SF-36. Patients filled out MIDAS in second and third visit within three and eight weeks after base line visit. Internal consistency (Cronbachα ) and test-retest reproducibility (Spearman correlation coefficient) were used to assess reliability. Convergent validity and MIDAS capability to differentiate between chronic and episodic headaches (migraine and TTH) were also assessed.
Results: The 267 participants had episodic migraine (EM-64%), chronic migraine (CM-13.5%), episodic TTH (ETTH-13.5%), and chronic TTH (CTTH-9). Internal consistency reliability was 0.8 for the entire sample, 0.72 for TTH, and 0.82 for migraine. Test-retest reliability for all questions between visit 1 and visit 2 varied from 0.54 to 0.71. Convergent validity was assessed using SF-36 as an external referent. Patients with episodic headaches (EM and ETTH) had significantly lower MIDAS scores than chronic headaches (CM and CTTH).
Conclusion: Persian MIDAS is a valid and reliable questionnaire for migraine and TTH that can differentiate between episodic headache and chronic headache.