Figure 2

Survival analysis for all-cause mortality in the study cohort. Crude mortality rate was 12.2% during the median 77.0 months of follow-up, and Kaplan–Meier curve showed that Low TCO2 group had higher mortality, compared to normal TCO2 group.
Survival analysis for all-cause mortality in the study cohort. Crude mortality rate was 12.2% during the median 77.0 months of follow-up, and Kaplan–Meier curve showed that Low TCO2 group had higher mortality, compared to normal TCO2 group.