Randomised, controlled trials versus real-world evidence studies: What have they taught us about MS?

While randomised, controlled trials (RCTs) are often seen as the best way to test the efficacy and safety of a new drug, recommendations based on these trials cannot always be easily applied to decision making in the clinic.¹ Gathering information about how a drug performs outside of an RCT can provide insights into how effective and well tolerated the dru