A study to investigate the prevalence of headache disorders and migraine conducted using medical claims data and linked results from online surveys: post-hoc analysis of other headache disorders
Abstract
BACKGROUND: Surveys using questionnaires to collect epidemiologic data may be subject to misclassification. Here, we analyzed a headache questionnaire to evaluate which questions led to a classification other than migraine.
METHODS: Anonymized surveys coupled with medical claims data from individuals 19-74 years old were obtained from DeSC Healthcare Inc. to examine proportions of patients with primary headache disorders (i.e.; migraine, tension-type headache, cluster headache, and "other headache disorders"). Six criteria that determined migraine were used to explore how people with other headache disorders responded to these questions.
RESULTS: Among the 21480 respondents, 7331 (34.0%) reported having headaches. 691 (3.2%) respondents reported migraine, 1441 (6.7%) had tension-type headache, 21 (0.1%) had cluster headache, and 5208 (24.2%) reported other headache disorders. Responses of participants with other headache disorders were analyzed, and the top 3 criteria combined with "Symptoms associated with headache" were "Site of pain" (7.3%), "Headache changes in severity during daily activities" (6.4%), and the 3 criteria combined (8.8%). The symptoms associated with headache were "Stiff shoulders" (13.6%), "Stiff neck" (9.4%), or "Nausea or vomiting" (8.7%), Photophobia" (3.3%) and "Phonophobia" (2.5%).
CONCLUSIONS: Prevalence of migraine as diagnosed by questionnaire was much lower than expected while the prevalence of "other headache" was higher than expected. We…
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Evidence Hub reads this as a secondary / pooled analysis, done in people. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence.
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