Observatoire des droits humains (anglais seulement)

What does it mean to ‘control’ for variables in a scientific study? A statistician explains

(Version anglaise seulement)

par Mark Louie Ramos, Assistant Research Professor of Health Policy and Administration, Penn State

Scientific studies, and news coverage about them, often declare that a study “controlled” for certain variables.

For example, the Washington Post reported on a study of GLP-1 drugs and a hormonal disorder. The article noted that “women on GLP-1s lost more weight than those in control groups.”

A couple months earlier, the Post reported on a…

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