Multiple sclerosis patients treated with intramuscular IFN-β-1a autoinjector in a real-world setting: prospective evaluation of treatment persistence, adherence, quality of life and satisfaction
2015
Objectives: The 12-month observational PERSIST study (NCT01405872) evaluated adherence associated with the intramuscular IFNβ-1a (i.m. IFN-β-1a) autoinjector pen in multiple sclerosis (MS) patients.Methods: MS patients initiating i.m. IFN-β-1a autoinjector treatment were prospectively assessed for physician-reported persistence (percentage of patients remaining on therapy) and patient-reported outcomes, including adherence (percentage of unmissed injections), compliance (percentage of patients missing no injections), tolerability (injection-site reactions [ISRs] and pain) and satisfaction.Results: The intent-to-treat population included 232 patients; of the 188 physician-reported 12-month completers, 182 patients remained on treatment (96.8% persistence). Monthly compliance rates were 87.5 – 96.2%. Mean monthly pain scores were 1.5 – 1.8 (scale: 0 = ‘no pain’; 10 = ‘extremely painful’). At 12 months, 73.5% of respondents reported no ISRs, 94.9% were satisfied/very satisfied with the autoinjector and 88.2%...
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