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Re: LearningEveryTrade post# 505523

Wednesday, 08/17/2022 5:55:40 PM

Wednesday, August 17, 2022 5:55:40 PM

Post# of 696931
Rescue medication is for when a drug fails (PFS in this case). But it is giving the patient extra dosing that increases the likelihood of survival which bias the OS data. That's what confounding is -- when the trial design biases the trial in favor of the treatment arm.
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