PMC:2917556 / 26533-27439 JSONTXT

{"project":"2_test","denotations":[{"id":"20473702-16305603-60564802","span":{"begin":275,"end":276},"obj":"16305603"},{"id":"20473702-12136063-60564803","span":{"begin":278,"end":280},"obj":"12136063"},{"id":"20473702-1525798-60564804","span":{"begin":282,"end":284},"obj":"1525798"},{"id":"20473702-7843949-60564805","span":{"begin":286,"end":288},"obj":"7843949"},{"id":"20473702-12913201-60564806","span":{"begin":493,"end":495},"obj":"12913201"}],"text":"The ways the ICHD criteria are applied and which diagnoses are included are also of great importance. It has been found that the prevalence of migraine almost doubles if the diagnosis probable migraine (i.e. patients fulfilling all migraine criteria except one) is included [9, 20, 51, 59]. Among the European studies, the highest migraine prevalences has been found in a yet unpublished study from Luxembourg (29%) performed by one of the authors (CA). This study has used the “ID migraine” [60] which is a screening instrument consisting of only three questions. This instrument has been validated against the ICHD-2 criteria in clinical settings, showing a high sensitivity and somewhat lower specificity. Probably, this method will include many patients with probable migraine, and thereby it will tend to show higher prevalence compared to the studies using strict ICHD criteria for definite migraine."}