3.4.3 Survival
The survival rate of the study population was 79.5% and the median survival time was 1107 days (IQR, 622–1681 days). Kaplan-Meier analysis showed a statistically significant difference in survival rates between the High C0 and Low C0 group (P = 0.025), as well as between the High IPV and Low IPV group (P = 0.007) (Figure 4C and 4F). According to the Cox proportional hazard model, Low C0 (HR 2.220, 95% CI 1.162–4.243, P = 0.016) and High IPV (HR 2.100, 95% CI 1.120–3.937, P = 0.021) was associated with increased risk of mortality (Table 2).