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Sensitivity, Specificity and Predictive Value

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1.
Directions:
A screening test for breast cancer was administered to 400 women with biopsy-proven breast cancer and to 400 normal women without breast cancer. The screening test results were positive for 100 of the biopsy-proven cases and 50 of the normal women.

Question 1:

The sensitivity of the test is (Round to no decimal places):

a. 88%

b. 67%

c. 25%

d. 33%

e. 12%

2.
The specificity of the test is (Round to no decimal places):

a. 88%

b. 67%

c. 25%

d. 33%

e. 12%

3.
The predictive value of a positive test is (Round to no decimal places):

a. 88%

b. 67%

c. 25%

d. 33%

e. 12%

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Solution Preview

1.
Directions:
A screening test for breast cancer was administered to 400 women with biopsy-proven breast cancer and to 400 normal women without breast cancer. The screening test results were positive for 100 of the biopsy-proven cases and 50 of the normal women.

Condition ...

Solution Summary

The solution calculates the sensitivity of the test, specificity of the test and predictive value of a positive test .

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