Figure 6.

Testing data distribution based on time before death (extreme gradient boosting). This figure illustrates a bar plot depicting the distribution of data based on the time before death. The x-axis represents the time before death events in days, whereas the y-axis represents the count of specific prediction results. Within the 7-day range, the data points were labeled as positive, resulting in either true-positive or false-negative outcomes. Conversely, data points occurring >8 days before death were labeled as either true-negative or false-positive outcomes. Therefore, the pink and red bars in the figure represent the distributions of false-negative and false-positive cases, respectively, as predicted by extreme gradient boosting.