Mid-term Survival
Ninety-one patients were included in the follow-up, and the other 21 patients were lost during follow-up because of changing contacts. Six patients died due to MACE during follow-up. The overall median follow-up time was 65 months (IQR 28-101 months). The mean survival time estimate was 147.2 (95% Cl 135.6-158.9) months, with a 3-year survival rate of 91.2% and a 5-year survival rate of 89.0%.
After grouping, the median survival time estimates for the low ΔDR group and the high ΔDR group were 154.9 (95% Cl 143.9-166.6) months and 113.8 (95% Cl 88.9-138.6) months respectively. Kaplan-Meier overall survival curves and number at risk table for patients with low ΔDR group and high ΔDR showed a statistically significant difference (Log-rank chi-square 5.775; p = 0.016).(Figure 2)