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  "path": "/t/collider-in-rct-subgroup-analysis/28689#post_10",
  "publishedAt": "2026-05-16T22:18:15.000Z",
  "site": "https://discourse.datamethods.org",
  "textContent": "Excellent. I can follow this logic and believe it to be sound and intuitive. To clarify, this doesn’t apply to subgroups that are defined by pre-treatment variables? These can still be influenced by _**U**_ as in the original DAGs at the start of this thread?",
  "title": "Collider in RCT Subgroup Analysis"
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