Subgroups analysis in the septic shock patients of the cross-validation group according to the presence of acute kidney injury and of acute respiratory failure.

AKI, acute kidney injury; ARF, acute respiratory failure, SIDapp, apparent strong ion difference; SIG, strong ion gap; AGcorr, anion gap corrected for albumin and lactate; ICC, intraclass correlation coefficient; CI, confidence interval. Agreement is expressed as bias, (95% limits of agreement).