borderline significantP = 0.063
The median OS in the group with a pre-treatment tumor diameter < 10.25 cm was 20.3 months (95% CI: 15.331–25.269), while it was 18.2 months (95% CI: 8.204–28.196) in the group with a tumor diameter ≥ 10.25 cm, indicating a borderline significant difference ( P = 0.063).