Cochrane researcher slams BMJ study

A paper in the BMJ has been wrongly taken to provide evidence that breast cancer screening is leading to better survival rates, two independent experts say.

The paper, comparing five-year survival rates of more than 80,000 women diagnosed between 1999 and 2005 with about 93,000 women diagnosed between 2006 and 2012, found better survival rates in the second cohort.

“Diagnosis of

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