revolution or survival free states bundle differences

The computation of stage-specific or stage-adjusted survival is not sufficient for interpretation of survival differences, because staging procedures change over time and may vary in different hospitals and countries. However, an earlier diagnosis may or may not make a treatment more effective in postponing death.

Longer survival may be achieved by postponing death through better treatment or by anticipating diagnosis. Interpreting survival differences and trends is not an easy task. However, for most cancer sites, survival increases over time and the survival rates of different countries tend to converge towards higher values.

Survival differences actually exist for cancer sites for which the stage of disease at diagnosis is the major prognostic factor (such as breast, stomach and colon cancer). Since 1990 a concerted action between European population-based cancer registries (the EUROCARE project) has been carried out with the aims of establishing whether there are differences in cancer patient survival in Europe, and the reasons for such differences.

Revolution or survival free states bundle differences