Comparative effectiveness of interferons in relapsing–remitting multiple sclerosis: a meta-analysis of real-world studies

Differences between interferons have been evaluated for over 20 years. While randomized controlled trial (RCT) data is mainly used for assessments and strong data for causal inferences, it does not necessarily reflect everyday practice. Real-world data may provide additional information.To assess the results, quality, and representativeness of observational studies directly comparing interferons (IFNs) in RRMS.Medline and Embase were searched...