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. 2009 May;84(5):422–435. doi: 10.1016/S0025-6196(11)60561-2

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FIGURE 4. — Mean quality of life ratings (Migraine-Specific Quality of Life Questionnaire [MSQ] subscales) in persons with migraine by level of interictal burden as measured by the 4-item Migraine Interictal Burden Scale (MIBS-4). MSQ role function-restrictive is a measure of the degree to which performance of daily activities is limited by migraines; MSQ role function-preventive is a measure of the degree to which performance of daily activities is interrupted by migraines; MSQ emotional function examines feelings of frustration and helplessness due to migraine.