Fig. 4.

Participants achieving ≥50% response in participants aged ≥60 years and overall population. OR, odds ratio; CI, confidence interval. A ≥ 50% response was defined as a ≥ 50% reduction from baseline in the monthly average number of migraine days during 12 weeks of double-blind treatment. ^aP < 0.05 vs placebo. ^bP < 0.0001 vs placebo