Fig. 4From: Organ system network analysis and biological stability in critically ill patientsRelationships among organ system dysfunction, networks, and biological stability. Each variable represents one organ system. The variables are connected with each other by lines when the correlations are statistically significant. Organ system dysfunctions in the non-survivors and the matched survivors are worse than that in the total survivors (colored with gray). When the organ systems are networked without isolation, the multiple organ system clusters are stable with narrowly regulated principal component scores. PaO2/FIO2, the ratio of partial pressure arterial oxygen to the fraction of inspired oxygen; NGAL, neutrophil gelatinase-associated lipocalin; CRP, C-reactive proteinBack to article page