borderline significanceP = 0.070
After adjusting for confounding variables, both high SQSTM1/P62 expression (HR = 3.53, 95% CI 1.16–10.74, P = 0.026) and older age (HR = 3.92, 95% CI 1.27–12.11, P = 0.017) retained independent prognostic significance, whereas adjuvant chemotherapy showed borderline significance (HR = 0.15, P = 0.070).