Key finding
Prior cancer diagnosis associated with 29% higher multivariate-adjusted all-cause mortality (HR 1.29, 95% CI 1.22–1.35)
Evidence & causal status
Strong
Associational; prospective cohort with national death-registry linkage
Caveats & limitations
Reliability / bias notes: Self-reported prior diagnosis; heterogeneous cancer types and time-since-diagnosis pooled together
This describes a population-level association from published research. It is not a prediction about any one individual, and association is not the same as causation unless stated otherwise above.