Adherence to interferon β-1b treatment in patients with multiple sclerosis in Spain.

Background: Adherence to interferon β-1b (INFβ-1b) therapy is essential to maximize the beneficial effects of treatment in multiple sclerosis (MS). For that reason, the main objectives of this study are to assess adherence to INFβ-1b in patients suffering from MS in Spain, and to identify the factors responsible for adherence in routine clinical practice.

Methodology/principal Findings: This was an observational, retrospective, cross-sectional study including 120 Spanish patients with MS under INFβ-1b treatment.