Journal of Clinical Epidemiology · 2004 · 172 citations · 17 references
Social SciencesNeurologyPsychologyItem Response TheoryPsychometricsHeadache AssessmentHeadache DisordersHeadache ManagementPain AssessmentPsychological TestingHeadache Impact AssessmentHeadache Symptom CharacterizationHeadache Syndromes
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A technique for measurement of attitudes
Rensis Likert · Medical Entomology and Zoology · 1932 · 8.2K citations
A six-item short-form survey for measuring headache impact: The HIT-6™
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