Validity of self-reported migraine in adolescents and children
Abstract
OBJECTIVE: To assess agreement for migraine day between self-report and diagnostic guidelines for children and adolescents using a headache diary.
BACKGROUND: Trial guidelines recommend prospective collection of headache features and adoption of migraine day as an outcome measure, but there is no clear consensus on the definition of migraine day.
METHODS: This is a secondary analysis of data from two projects-a prospective cohort study validating a pediatric scale of treatment expectancy and a clinical trial of occipital nerve blocks to treat status migrainosus. Participants completed a text message-based diary for 4 or 12 weeks (depending on treatment), and a detailed headache assessment on a random 20% of headache days. Using this assessment, we determined whether a headache day qualified for migraine or probable migraine, based on the International Classification of Headache Disorders, 3rd edition (ICHD-3).
RESULTS: Of 122 enrolled children and adolescents, 106 (86.9%) completed ≥1 detailed headache assessment (438 entries). We found moderate agreement between self-reported and ICHD-derived migraine day, with a Cohen's Kappa of 0.50 (positive predictive value [PPV]: 0.66; negative predictive value [NPV]: 0.85; correlation: 0.51). Allowing for ICHD-derived probable migraine significantly increased PPV (0.66 vs. 0.94; 95% CI: 0.57-0.74 vs. 0.90-0.97), but decreased NPV (0.85 vs. 0.293; CI: 0.77-0.90 vs. 0.199-0.40), Cohen's Kappa (0.50 vs. 0.237; CI: 0. 389-0.60 vs.…
How strong is the evidence?
Evidence Hub reads this as a cohort study, done in people. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence. Reported size: 122 participants or records.
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