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The given table displays the results of the hypothetical Breast Cancer screening test
Results of a Hypothetical Screening Test for Breast Cancer Screening Test
Cancer confirmed
Cancer not confirmed
Total
Positive
133
982
1,115
Negative
46
63,649
63,695
178
64,632
64,810
a) Determine the sensitivity of this test and explain what this means
b) Determine the specificity of this test and explain what this means
c) Determine the positive predictive value and explain what this means
d) If the preclinical prevalence of breast cancer increased in the screened population would you expect the positive predictive value to increase, decrease or remain unaltered? Why?
e) If the sensitivity of this test improved within the screened population would you expect the positive predictive value to increase, decrease or remain unaltered? Why?
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