CTCA reports on its website that the percentage of its patients who are alive after six months, a year, 18 months and longer regularly tops national figures. For instance, 60 percent of its non-small-cell lung cancer patients are alive at six months, CTCA says, compared to 38 percent nationally. And 64 percent of its prostate cancer patients are alive at three years, versus 38 percent nationally.
Such claims are misleading, according to nine experts in cancer and medical statistics whom Reuters asked to review CTCA's survival numbers and its statistical methodology.
via Andrew Gelman
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