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| The first 150 words of the full text of this article appear below. |
EDITOR
In Mayor's news story in the issue of 27 October the office of
the NHS cancer screening programme in the United Kingdom misrepresents
our research entirely.1 The office says that our findings
of more aggressive treatment of breast cancer among screened women are
based on only two studies, classified as poor quality. They are not.
Numbers of mastectomies as well as numbers of tumourectomies increase
when women are screened. This finding is consistent and is based on all
four of the seven screening trials that have published data on this,
including the two medium quality trials from Canada and
Malmö.2
The office also incorrectly notes that we did not investigate whether
more aggressive treatment was beneficial since we published extensive
mortality data.
2 3
Furthermore, it is wrong to say that
our conclusion about the lack of benefit of mammography comes from an
analysis of the two trials of medium quality.