Although the association of age with psychological distress weakened over time, the borderline significance of age in our robust regression model (B = 0.032; p = 0.058) suggests it remains a relevant factor in identifying patients at risk for persistent distress.
Baseline-adjusted multivariable quantile regression demonstrated that while baseline symptom status was the strongest predictor, cancer type remained a significant independent predictor of depression at follow-up (B = −1.258; p = 0.0), whereas it did not reach statistical significance for the prediction of anxiety and stress at follow-up.