Asst Prof of Biostats @ University of Pennsylvania Center for Causal Inference www.awlevis.com interests: causal inference, distribution shift, machine learning, non/semiparametrics, w/ applications in EHR data & beyondhttps://bsky.app/profile/awlevis.bsky.socialhttps://bsky.app/profile/awlevis.bsky.social/post/3m7lxhzkp5c2mSuch a rewarding project with @gabeloewinger.bsky.social and the team! Participant blinding is a SUPER old idea: as late as 1784!! Yet (un)blinding seems (to me) still poorly understood, e.g., compared to confounding, selection bias. I hope our work clarifies some issues, esp. in mental health RCTs [contains quote post or other embedded content]10 Dec 2025 01:58 +0000at://did:plc:ec4mebsqap3uozffaavbop2v/app.bsky.feed.post/3m7lxhzkp5c2m