Fig. 2From: Association of common genetic variation in the protein C pathway genes with clinical outcomes in acute respiratory distress syndromePatients are stratified on the basis of the number of high-risk genotypes possessed by each individual, and the height of the bars represents the number of ventilator-free days in each group. There is a stepwise decrease in the number of ventilator-free days with increasing number of high-risk genotypes (p = 0.02)Back to article page