Persistence, use of resources and costs in patients under migraine preventive treatment: the PERSEC study.

J Headache Pain · 2022 · PMC9261063 · PMID 35794535

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did not reach statistical significanceno p-value reported

The same trend was observed for the treatments administered in third line or higher, although it did not reach statistical significance, probably due to the lower number of patients in this category.

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