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Restricted cubic spline regression analysis of ACAG with ICU (A), In-hospital (B), 14-day (C), 28-day (D), and 90-day (E) all-cause mortality. ICU mortality: P for overall-linear = 0.007. In-hospital mortality: P for overall-linear = 0.003. 14-day all-cause mortality: P for overall-linear = 0.01. 28-day all-cause mortality: P for overall-linear = 0.005. 90-day all-cause mortality: P for overall-linear = 0.001.ICU, Intensive Care Unit; ACAG, Albumin-Corrected Anion Gap; HR, Hazard ratio
