Figure 3

Longitudinal analysis of plasma 5-HIAA level and clinical outcome. The differences in the rate of mechanical ventilator extubation (a) and rate of ICU discharge (b) between the lower plasma 5-HIAA level group (≤ 13.6 ng/mL, n = 18) and higher-level group (> 13.6 ng/mL, n = 18). The results of the log-rank tests are shown.