Figure 3From: Antithrombin supplementation for anticoagulation during continuous hemofiltration in critically ill patients with septic shock: a case-control studySurvival curves of filters in patients with an AT of less than 70% according to AT supplementation (period 2) or not (period 1). The estimated hazard ratio was 2.15 (95% confidence interval 1.29 to 4.02).Back to article page