Real-World Analysis of Clinical Characteristics, Treatment Patterns, and Patient-Reported Outcomes of Insufficient Responders and Responders to Prescribed Acute Migraine Treatment in China.

Abstract

Migraine is a common disabling primary headache disorder characterized by attacks of severe pain, sometimes accompanied by symptoms including nausea and photo-/phono-phobia. Real-world data of patients with migraine who sufficiently (responders) and insufficiently (insufficient responders) respond to acute treatment (AT) are limited in China. This analysis explored whether responders to AT differ from insufficient responders in terms of clinical characteristics, treatment patterns, and patient-reported outcomes in China. Data were drawn from the Adelphi Migraine Disease Specific Programme™, a point-in-time survey of internists/neurologists and their consulting patients with migraine, conducted in a real-world setting in China, January-June 2014. Responders and insufficient responders to prescribed AT were patients who typically achieved headache pain freedom within 2h of AT in ≥ 4 and ≤ 3 of five migraine attacks, respectively. Responders were compared with insufficient responders; logistic regression was used to identify factors associated with insufficient response. Of 777 patients currently receiving AT, 44.0% were insufficient responders. Significantly fewer responders than insufficient responders had migraine with aura (13.1 vs. 23.8%; p = 0.0001). Responders reported a significantly lower mean Migraine Disability Assessment (MIDAS) total score (5.5 vs. 6.6; p = 0.0325). Responders reported a lower mean impairment while working (50.0 vs. 63.9%; p < 0.0001), overall work impairment (52.6 vs. 66.0%; p < 0.0001), and activity impairment (48.9 vs. 59.0%; p < 0.0001). Statistically significant factors associated with insufficient response to AT included diabetes, unilateral pain, vomiting, sensitivity to smell, visual aura/sight disturbance, and an increase in MIDAS total score. However, there were no statistically significant differences in ATs received by responders and insufficient responders at any regimen of therapy. Many patients with migraine in China are insufficient responders to AT, experiencing worse symptoms that lead to overall poorer quality of life than responders. This unmet need suggests that new effective treatment options are required for migraine.