Trial reportCephalalgia : an international journal of headache2015
The impact of chronic migraine: The Chronic Migraine Epidemiology and Outcomes (CaMEO) Study methods and baseline results.
Trial report in Cephalalgia : an international journal of headache, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 139 papers, 3 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
139 citing papers in PubMed, 3 syntheses or guidelines pooled it.
- Comparison of eptinezumab 300 mg with 100 mg for the treatment of migraine: a meta-analysis of randomized controlled studies.African health sciences · 2024Pooled it
- Treatment of resistant chronic migraine with anti-CGRP monoclonal antibodies: a systematic review.European journal of medical research · 2022Pooled it
- Beta-blockers for the prevention of headache in adults, a systematic review and meta-analysis.PloS one · 2019Pooled it
- Treatment of chronic migraine with Botox (onabotulinumtoxinA): Development, insights, and impact.Medicine · 2023Trial
- Reduction in migraine-associated burden after eptinezumab treatment in patients with chronic migraine.Cephalalgia : an international journal of headache · 2022Trial
- Long-term reductions in disease impact in patients with chronic migraine following preventive treatment with eptinezumab.BMC neurology · 2022Trial
- Diagnostic accuracy of an artificial intelligence online engine in migraine: A multi-center study.Headache · 2022Trial
- Early response to eptinezumab indicates high likelihood of continued response in patients with chronic migraine.The journal of headache and pain · 2022Trial
- Long-term safety and tolerability of eptinezumab in patients with chronic migraine: a 2-year, open-label, phase 3 trial.BMC neurology · 2021Trial
- The Use of Botulinum Toxin in the Management of Headache Disorders.Handbook of experimental pharmacology · 2021Trial
- Impact of galcanezumab on total pain burden: findings from phase 3 randomized, double-blind, placebo-controlled studies in patients with episodic or chronic migraine (EVOLVE-1, EVOLVE-2, and REGAIN trials).The journal of headache and pain · 2020Trial
- Determining Thresholds for Meaningful Change for the Headache Impact Test (HIT-6) Total and Item-Specific Scores in Chronic Migraine.Headache · 2020Trial
- Trial
- Eptinezumab in episodic migraine: A randomized, double-blind, placebo-controlled study (PROMISE-1).Cephalalgia : an international journal of headache · 2020Trial
- The impact of onabotulinumtoxinA on severe headache days: PREEMPT 56-week pooled analysis.The journal of headache and pain · 2017Trial
- OnabotulinumtoxinA improves quality of life and reduces impact of chronic migraine over one year of treatment: Pooled results from the PREEMPT randomized clinical trial program.Cephalalgia : an international journal of headache · 2016Trial
- Patient-Reported Outcomes from a 1-Year, Real-World, Head-to-Head Comparison of OnabotulinumtoxinA and Topiramate for Headache Prevention in Adults With Chronic Migraine.Journal of primary care & community healthTrial
- Changes in Migraine-Related Outcomes and Functioning at 1 Year: Results of the Longitudinal OVERCOME (US) Study.Neurology and therapy · 2026Article
- Migraine-Related Burden, Treatment Interventions, and Healthcare Experiences by Race and Ethnicity: Results of the Migraine Report Card Survey.Journal of racial and ethnic health disparities · 2026Article
- Factors Associated with Migraine Attack Duration in Adults: A Cross-Sectional Study.Neuroepidemiology · 2026Article
79 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
Abstract
backgroundLongitudinal migraine studies have rarely assessed headache frequency and disability variation over a year.
methodsThe Chronic Migraine Epidemiology and Outcomes (CaMEO) Study is a cross-sectional and longitudinal Internet study designed to characterize the course of episodic migraine (EM) and chronic migraine (CM). Participants were recruited from a Web-panel using quota sampling in an attempt to obtain a sample demographically similar to the US population. Participants who passed the screener were assessed every three months with the Core (baseline, six, and 12 months) and Snapshot (months three and nine) modules, which assessed headache frequency, headache-related disability, treatments, and treatment satisfaction. The Core also assessed resource use, health-related quality of life, and other features. One-time cross-sectional modules measured family burden, barriers to medical care, and comorbidities/endophenotypes.
resultsOf 489,537 invitees, we obtained 58,418 (11.9%) usable returns including 16,789 individuals who met ICHD-3 beta migraine criteria (EM (<15 headache days/mo): n = 15,313 (91.2%); CM (≥ 15 headache days/mo): n = 1476 (8.8%)). At baseline, all qualified respondents (n = 16,789) completed the Screener, Core, and Barriers to Care modules. Subsequent modules showed some attrition (Comorbidities/Endophenotypes, n = 12,810; Family Burden (Proband), n = 13,064; Family Burden (Partner), n = 4022; Family Burden (Child), n = 2140; Snapshot (three months), n = 9741; Core (six months), n = 7517; Snapshot (nine months), n = 6362; Core (12 months), n = 5915). A total of 3513 respondents (21.0%) completed all modules, and 3626 (EM: n = 3303 (21.6%); CM: n = 323 (21.9%)) completed all longitudinal assessments.
conclusionsThe CaMEO Study provides cross-sectional and longitudinal data that will contribute to our understanding of the course of migraine over one year and quantify variations in headache frequency, headache-related disability, comorbidities, treatments, and familial impact.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.