KAMST - Simple method for patients with migraine screening

Abstract

Migraine is highly prevalent and disabling disorder, but despite that one of the main problems that remains in the clinical practice is delayed diagnosis and delayed specific treatment that has impact on patients' quality of life and productivity. There should be easy acceptable method to select those patients who might have migraine and who need to be referred to neurologist's consultation. We hypothesize that our created KAMST questionnaire is reliable method to select patients who might have migraine in primary care. To evaluate our hypothesis we made a research that consisted of two parts. Part A consisted of closed type questions made by The International Classification of Headache Disorders 3rd edition diagnostic criteria of migraine without aura. Part B was KAMST questionnaire. 298 patients were questioned. 209 (72%) of them were women and 89 (28%) - men. According to The International Classification of Headache Disorders 3rd edition migraine without aura diagnostic criteria, migraine was diagnosed for 42 (14,1%) patients, and according our KAMST questionnaire - 83 (27,9%). From 42 patients whom migraine was diagnosed with The International Classification of Headache Disorders 3rd edition criteria, 34 (81%) of these patients migraine was diagnosed with KAMST. From 256 patients whom migraine wasn't diagnosed with The International Classification of Headache Disorders 3rd edition criteria, 49 of them (19,1%) migraine was diagnosed with KAMST. We found statistically significant difference between questionnaires. KAMST sensitivity was - 81%, specificity - 81%, predictive positive value - 41%, predictive negative value - 96%, the Cronbach alpha for the total scale was 0,604. Our KAMST questionnaire of migraine is reliable and valid method for patients' screening but has some limitations.

Keywords: Headache; Migraine; Questionnaire; Screening.