Fig. 2From: Alcohol and migraine: trigger factor, consumption, mechanisms. A reviewPercentage of alcohol abstainers in women of general population and in female migraine patients. *P < 0.01 versus migraine females (95 or 99% confidence interval for a population proportion). In the Tuscan women of age range similar to that of migraine patients (15–54 years), the percentage of nonconsumers was even less (17–23%)Back to article page