Crude mortality rates by age-groups alongside rate ratios (RRs), 95% confidence intervals, and interaction P values from multivariable Poisson regression models accounting for year of diagnosis, age (as a continuous variable), sex, socioeconomic status, region, and 17 baseline comorbidities. Interaction P values refer to the interaction between age group (categorized as age <80 years or age ≥80 years) and year of diagnosis.