Fig. 2

Trajectory of transaminase in two group of patients with TAR with FET. A Trajectory of alanine transaminase (ALT) and aspartate transaminase (AST) in the ABO group (n = 130). B Trajectory of ALT and AST in the conventional TAR with FET group (n = 230). C Box plot of ALT. D ALT ratio. E Box plot of AST. F AST ratio. Data points of A and B are represented by mean with standard error of mean bars. There are 4 types of box plots in C and E in each time points, which are the examination levels of the ABO group (blue), the conventional group (pink), difference of levels between the points in the ABO group (green), and in the conventional group (purple), respectively. The green band represents the referred normal range of the examination. D and F are the examination levels compared to preoperative values. P value is represented above the standard error of mean bars or the boxes. Time points were defined as before the operation (Preop), the time when the operation ended and transferred to ICU (0), twice on postoperative days (POD) 1 to 3 (1 d: POD1 morning; 1.5: POD1 afternoon; 2 d: POD2 morning; 2.5: POD2 afternoon; 3: POD3 morning), additional point of ICU stay if the patient stayed in there more than 4 d (Mid), the last examination before transfer from the ICU (ICU), the first examination after transfer from the ICU to the ward (Ward), and the last examination before discharge (Discharge). The rationale for the choice of these time points is to include both time-matched (postoperative days 1 to 3) and event-matched (transfer out of ICU, discharge) comparison