= Ilya Shpitser
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<Ilya Shpitser> develops foundations of <causal inference>. With <Tyler J. VanderWeele>, he compared formal definitions of a <confounder> by asking whether adjusting for all such variables removes <confounding>, and whether each variable can help in an appropriate adjustment context.<On the definition of a confounder by Tyler J. VanderWeele and Ilya Shpitser>[Abstract and defining criteria]{ref}
This makes adjustment a problem about causal structure. A variable's observed correlation with treatment and outcome alone cannot determine whether conditioning on it is useful. Their analysis relates a <confounder> to membership in a minimally sufficient adjustment set.<On the definition of a confounder by Tyler J. VanderWeele and Ilya Shpitser>[Definition4]{ref}
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