Corrections for Conversion of Laboratory Values and Units of Activity Levels

To the Editor On behalf of my coauthors, I write to address concerns raised by a reader regarding the data presented in the Supplement to our Original Investigation, “Balloon Angioplasty vs Medical Management for Intracranial Artery Stenosis: The BASIS Randomized Clinical Trial,” published online first on September 5, 2024, and in the October 1, 2024, print/online issue of JAMA. We value the feedback and have conducted a thorough review of the data, specifically supplemental Tables S2, S3, and S12.