[Examining the diagnostic accuracy of a new XXXX screener].

@entity1 @entity2704 @entity10
BACKGROUND: Migraine affects more than 10% of the Hungarian population, causes significant disability and severely affects @entity1 ' generic and condition-specific quality of life. Despite these facts, a significant proportion of @entity1 is not diagnosed and not treated adequately. @entity10 centres can provide care for only a fraction of all @entity1 . The task of primary care providers would be greatly simplified by a reliable self-administered @entity2704 screening questionnaire. OBJECTIVE: To develop a short and reliable questionnaire as a @entity2704 screening tool. METHODS: Outpatients at the @entity10 Service, Department of Neurology, Semmelweis University completed a self-administered questionnaire which contained 9 yes/no questions about their headaches' characteristics. The number of 'yes' answers (the @entity1 ' total score) was evaluated in connection with the diagnosis based on the International @entity10 Society criteria. We calculated the sensitivity, specificity, positive and negative predictive value as well as the misclassification rate for each total score value and used these to establish the final cutoff value of the questionnaire. 306 @entity1 (242 females, mean age 39.1    13.3 years) were enrolled. The diagnosis was @entity2704 in 244. RESULTS: Completing the questionnaire did not pose any difficulty for the @entity1 . At a cutoff value of 5 points the questionnaire's sensitivity was 0.96 and specificity was 0.61. The positive predictive value was 0.91 and the negative pre- dictive value was 0.81. The misclassification rate was 0.11. DISCUSSION: Our results show that the questionnaire may help the diagnosis of @entity2704 . In order to use it in medical practice, its further evaluation is necessary on a large representative sample of the Hungarian population.
