Combining cohort and period methods for retrospective time trend analyses of long-term cancer patient survival rates
2003

Analyzing Long-Term Cancer Survival Rates

Sample size: 24000000 publication Evidence: high

Author Information

Author(s): Brenner H, Spix C

Primary Institution: German Centre for Research on Ageing

Hypothesis

Can combining cohort and period analysis improve the estimation of long-term cancer patient survival rates?

Conclusion

The mixed analysis method provides a comprehensive view of long-term cancer survival trends over an extended time span.

Supporting Evidence

  • Long-term cancer survival statistics are increasingly reported by cancer registries worldwide.
  • Cohort analysis is useful for retrospective analyses but cannot be applied to recently diagnosed patients without long-term follow-up.
  • Period analysis provides recent survival estimates by focusing on patients within a recent time interval.
  • Mixed analysis combines cohort and period methods to allow comprehensive monitoring of survival trends.

Takeaway

This study shows how we can better understand how long cancer patients live by using two different ways to look at their survival data together.

Methodology

The study used the SEER database from 1973 to 1999 to analyze cancer survival rates using cohort, period, and mixed analysis methods.

Limitations

The study's findings may not apply to patients diagnosed in the first years of cancer registration due to lack of long-term follow-up data.

Participant Demographics

Data included patients from nine population-based cancer registries covering about 24 million people.

Digital Object Identifier (DOI)

10.1038/sj.bjc.6601295

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