The prevalence of MS in the United States

In the article “The prevalence of MS in the United States: A population-based estimate using health claims data" by Wallin et al.,¹ first published online February 15, 2019, the text regarding the lower bound for MS prevalence in a paragraph in Results should read: “After adjustment for the uninsured and application of the lower-bound inflation factor to account for undercounting due to the limited period of observation, the estimated 2010 prevalence for MS cumulated over 10 years was 288.2 per 100,000 (95% CI 287.4–289.0), corresponding to 623,437 people with MS.” This is correctly represented in table 2. The authors regret the error.