Inverse association of obesity with bout periodicity in episodic cluster headache: a multicenter cross-sectional study.

J Headache Pain · 2025 · PMC12180171 · PMID 40542389

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did not reach statistical significanceno p-value reported

Next, despite the possible impact of smoking on ECH [ 19 ], the association between smoking and lifetime bout occurrence did not reach statistical significance (Additional Table 3 ).

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