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. 2021 Apr 16;8(3):e992. doi: 10.1212/NXI.0000000000000992

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Copyright © 2021 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the American Academy of Neurology.

This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND), which permits downloading and sharing the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal.

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(A) Nelson-Aalen cumulative hazard estimate plot showing time to event from start of drug in patients still on biologics. (B) Nelson-Aalen cumulative hazard estimate plot showing time to event from start of drug in patients off biologics.