26. Mammograms. A 9-year study in Sweden compared21,088
Chapter 22, Problem 26(choose chapter or problem)
26. Mammograms. A 9-year study in Sweden compared21,088 women who had mammograms with 21,195 whodid not. Of the women who underwent screening,63 died of breast cancer, compared to 66 deaths amongthe control group. (The New York Times, Dec 9, 2001)a) Do these results support the effectiveness of regularmammograms in preventing deaths from breast cancer?b) If your conclusion is incorrect, what kind of error haveyou committed?
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