That study looks at something else entirely: The relation between screening and mortality. It doesn't say anything about survival rates over time. > Conclusion

That study looks at something else entirely: The relation between screening and mortality. It doesn't say anything about survival rates over time. > Conclusions and Relevance When analyzed at the county level, the clearest result of mammography screening is the diagnosis of additional small cancers. Furthermore, there is no concomitant decline in the detection of larger cancers, which might explain the absence of any significant difference in the overall rate of death from the disease. Together, these findings suggest widespread overdiagnosis.