Evaluation of the 6-item Identify Chronic Migraine screener in a large medical group

Jelena M. Pavlovic, Justin S. Yu, Stephen D. Silberstein, Michael L. Reed, Robert P. Cowan, Firas Dabbous, Riya Pulicharam, Hema N. Viswanathan, Richard B. Lipton

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: To evaluate the sensitivity and specificity of the 6-item Identify Chronic Migraine screener (ID-CM[6]), designed to improve the detection of chronic migraine (CM). Background: CM is often undertreated and underdiagnosed. Survey-based studies have found that approximately 75–80% of people meeting criteria for CM do not report having received an accurate diagnosis. Methods: This study used claims data of patients enrolled in a large medical group who had at least one medical claim with an International Classification of Diseases 9th/10th revision diagnostic code for migraine in the 12-month prescreening period. The Identify Chronic Migraine survey was administered by e-mail, in-person, or over the telephone to all enrolled patients. A Semi-Structured Diagnostic Interview (SSDI) was administered by telephone by a trained physician. The ID-CM(6) and SSDI classifications of CM status were compared to evaluate sensitivity and specificity of the ID-CM(6) screening tool. Results: The analysis of the ID-CM(6) screening tool included 109 patients, with 65/109 (59.6%) positive for CM based on the SSDI. The mean (standard deviation) age of the patient sample was 49 (15) years and 100/109 (91.7%) were female. Using the SSDI as the diagnostic gold standard, the ID-CM(6) had a sensitivity of 70.8% (46/65) and a specificity of 93.2% (41/44). Conclusion: The ID-CM(6) demonstrated acceptable sensitivity and good specificity in determining CM status. The results of this analysis support the real-world utility of the ID-CM(6) as a simple and useful tool to identify patients with CM.

Original languageEnglish (US)
Pages (from-to)335-342
Number of pages8
JournalHeadache
Volume61
Issue number2
DOIs
StatePublished - Feb 2021

Keywords

  • assessment
  • headache disorders
  • screening tool
  • symptom evaluation
  • validated

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology

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