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Simulated mean (SD) monthly number of migraine days (A) and change from baseline in monthly migraine days over time in virtual episodic migraine patients (B) and monthly number of headache days of at least moderate severity (C) and change from baseline in monthly headache days of at least moderate severity over time in virtual chronic migraine patients (D). q1m = once monthly; q3m = once quarterly; SD = standard deviation.
