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. 2021 Dec 10;12:805334. doi: 10.3389/fneur.2021.805334

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Copyright © 2021 Schoenen, Timmermans, Nonis, Manise, Fumal and Gérard.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Proportion of patients with CM with 50 or 30% decrease in headache days during the 3rd month of erenumab treatment: on the left, patients with CM with pain-free periods (ICHD3 A1.3.1); on the right, patients with CM with continuous pain (ICHD3 A1.3.2). Insert: monthly change in headache days during the first 3 months of treatment and percentage decrease during 3 months (pain-free group: dashed line; continuous pain: continuous line). ***p < 0.001 chi-squared test “pain-free” vs. “continuous pain”.