Figure 3From: Stratification of the severity of critically ill patients with classification trees Classification tree by C4.5 algorithm. The gray squares denote terminal prognostic subgroups. INOT: Inotropic therapy; (A-a)O2 gradient: Alveolar-arterial oxygen gradient (mmHg); MV: Mechanical ventilation; COI: Chronic organ insufficiency; MAP: Mean arterial pressure.Back to article page