The Validation of the Persian Version of the ID-Migraine Questionnaire.

Background

Migraine is often not diagnosed or treated properly, despite being a common condition. The ID-migraine is a brief, self-administered test developed as a valuable tool for screening and diagnosing migraine in primary care settings. The objective of the present study was to produce a Persian translation of the original ID-migraine, perform cultural adaptation, and evaluate its validity.

Methods

Consecutive patients who attended two neurology clinics for headache were enrolled in the study. Diagnoses were established by headache specialists and were compared with the Persian ID-migraine results.

Results

Among the 657 participants included, 470 (71.5%) were clinically diagnosed with migraine, 120 (18.2%) with tension-type headache, and 40 (6.1%) with cluster headache. The validity attributes of the Persian ID-migraine were as follows: sensitivity, 0.96 (95% CI, 0.93-0.98); specificity, 0.46 (95% CI, 0.35-0.56); positive predictive value, 0.86 (95% CI, 0.82-0.89); negative predictive value, 0.76 (95% CI, 0.63-0.87), and a misclassification error of 14.9%. The questionnaire's Kappa coefficient was 0.78.

Conclusions

The Persian version of the ID-migraine questionnaire exhibited sufficient sensitivity and positive predictive value, along with an acceptable misclassification error. However, it demonstrated a deficient level of specificity and a considerably reduced negative predictive value.