Migraine and traumatic brain injury: a cohort study in Taiwan
Abstract
OBJECTIVE: Traumatic brain injury is now a major contributor to the global healthcare burden. Migraine is another debilitating disease with a global health impact. While most researchers agree that traumatic brain injury is a risk factor for migraine, whether migraine is a risk factor for traumatic brain injury still remains under debate. We therefore aimed to investigate whether migraine was a risk factor for developing traumatic brain injury.
STUDY DESIGN: Retrospective population-based cohort study.
SETTING: Data for people who had been diagnosed with migraine were retrieved from Taiwan's National Health Insurance Research Database.
PARTICIPANTS: We identified 7267 patients with newly diagnosed migraine during 1996-2010. The migraineurs to non-migraineurs ratio was set at 1:4 to enhance the power of statistical tests.
PRIMARY AND SECONDARY OUTCOME MEASURES: We used multivariate Cox proportional hazard regression models to assess the effects of migraines on the risk of traumatic brain injury after adjusting for potential confounders.
RESULTS: The overall traumatic brain injury risk was 1.78 times greater in the migraine group compared with the non-migraine group after controlling for covariates. Additionally, patients with previous diagnoses of alcohol-attributed disease, mental disorders and diabetes mellitus had a significantly higher traumatic brain injury risk compared with those with no history of these diagnoses.
CONCLUSIONS: This study of a population-based database…
How strong is the evidence?
Evidence Hub reads this as a cohort study, 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. Reported size: 7,267 participants or records.
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