TABLE 3.

Correlation between complexity of aura and preventive treatment response.

At 3 months	Simple aura (n = 41)	Complex aura (n = 4)	Contingency coefficient	P
30% reduction from baseline of MMDs/MHDs	28	4	0.20	0.18
	13	0
50% reduction from baseline of MMDs/MHDs	24	3	0.10	0.52
	17	1
At 6 months	(n = 24)	(n = 4)
30% reduction from baseline of MMDs/MHDs	19	3	0.04	0.85
	5	1
50% reduction from baseline of MMDs/MHDs	15	3	0.10	0.63
	9	1
At most recent follow-up	(n = 40)	(n = 4)
30% reduction from baseline of MMDs/MHDs	33	3	0.06	0.71
	7	1
50% reduction from baseline of MMDs/MHDs	29	3	0.02	0.92
	11	1

MIDAS, migraine disability assessment questionnaire; MMDs/MHDs, monthly migraine/headache days; MOH, medication-overuse headache; MSQ, migraine-specific quality of life questionnaire.