Additional file 1: Table S1. Detailed description of the covariates used for multivariate Cox hazards analysis to identify factors associated with the onset or persistence of ARC. Table S2. Detailed description of the covariates used for multivariate analysis to identify factors associated with mortality or fewer ICU-free days. Table S3. Independent factors affecting mortality, as determined by a multiple logistic regression analysis. Table S4. Independent factors affecting lesser ICU-free days, as determined by a multiple Cox regression analysis.