title: Propensity-matching analysis is not straightforward.
authors.affiliation: 1 ECSTRA Team, UMR 1153, Inserm Paris Diderot University Paris, France.
authors.forename: Sylvie
authors.initials: S
authors.lastname: Chevret
mesh_terms: D003422:Critical Care / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D007362:Intensive Care Units / Q000706:statistics & numerical data*; D007902:Length of Stay / Q000706:statistics & numerical data*; D008297:Male; D018908:Muscle Weakness / Q000401:mortality*; D063868:Patient Outcome Assessment