Title

Dichotomous vs. interval rating of headache symtomatology: An investigation into the reliability of headache questionnaire data

Document Type

Article

Publication Date

1980

Citation / Publisher Attribution

Thompson, J.K. & Figueroa, J.L. (1980). Dichotomous vs. interval rating of headache symtomatology: An investigation into the reliability of headache questionnaire data. Headache, 20, 261-265