Retrospective collection of 90-day modified Rankin Scale is accurate.

Mengxi WangSuja S RajanAsha P JacobNoopur SinghStephanie A ParkerRitvij BowryJames C GrottaJose-Miguel Yamal

Published in: Clinical trials (London, England) (2020)

Retrospective recall of 90-day modified Rankin Scale at a later time point is a valid means to impute missing data in stroke clinical trials.

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