highly significantp < 0.001
Patients aged over 70 and over 80 years demonstrated a highly significant decrease in OS with an HR of 2.2 (95%- CI 1.8–2.8, p < 0.001) and 3.0 (95%-CI 2.4–3.7, p < 0.001) compared to younger patients.
Patients aged over 70 and over 80 years demonstrated a highly significant decrease in OS with an HR of 2.2 (95%- CI 1.8–2.8, p < 0.001) and 3.0 (95%-CI 2.4–3.7, p < 0.001) compared to younger patients.
In the multivariable analysis within the full model, venous spread showed a marginally non-significant effect in patients with V1 compared to V0 involvement, but had an HR of 1.5 (95%- CI 1.0–2.3, p = 0.060).
However, multivariable analysis revealed a borderline non-significant effect despite an HR of 1.2 (95%-CI 1.0–1.4, p = 0.073).