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Each patient was weighted by the inverse probability of being in their anticoagulant exposure group. Compared with no anticoagulation, only prophylactic-dose anticoagulation was associated with lower mortality at 60 days (prophylactic dose: aHR, 0.706; 95% CI, 0.514-0.897; treatment dose: aHR, 0.922; 95% CI, 0.631-1.348).
