Table 3.

Indirect costs and scale scores

	GLOBAL POPULATION	CM	EM	p-value (CM vs. EM)
Days of missed work/school per year	35.1 ± 71.2	57.2 ± 87.6	6.8 ± 18.0	0.001
Days with productivity reduced by half	51.6 ± 82.8	82 ± 97.6	13.6 ± 31.2	0.001
MIDAS	61.5 ± 68.8	98.4 ± 72.3	15.5 ± 17.7	0.001
General Health – SF 36	51.8 ± 20.9	39.9 ± 14.7	66.2 ± 18.2	0.001
HIT-6	62.8 ± 9.8	66.1 ± 8.4	58.7 ± 10.1	0.001

CM = Chronic Migraine, EM = Episodic Migraine