Fig. 8From: Modelling hospital outcome: problems with endogeneityVentilation mortality contrast (absolute difference, MV versus non-ventilated, y-axis: ± about the null difference of 0) for probit model on left, "eprobit" (ROD endogenous) on right. MV contrast effect (ventilated versus not-ventilated) as solid black circles with 95%CIBack to article page