Table 1.

Characteristics of study participants

Characteristic	Control (n=38)	Migraine (n=90)
Age, mean (SE), yrs	55 (1.3)	58 (0.8)
Female	68%	67%
Body mass index, mean (SE)	26 (0.6)	26 (0.5)
Hypertension (self-reported, doctor-diagnosed)	29%	34%
Diabetes (self-reported)	2.6%	7.8%
Smoking, ever	68%	70%
Smoking, pack-years, mean (SE)	25 (3.5)	17 (2.0)
Duration migraine history, yrs (SE)
Until baseline study	-	23.7 (1.2)
Until follow-up study	-	30.1 (1.4)
Estimated total number of migraine attacks (SE)
Until baseline study	-	358 (40)
Until follow-up study	-	508 (61)

Differences between controls and migraineurs were not significant (p>0.05)