Calculate the % sensitivity and % specificity of urine pregnancy test given the data below. (Hint:...
- Calculate the % sensitivity and % specificity of urine pregnancy test given the data below. (Hint: You will first have to determine if the number in the column is a true positive, true negative, false positive, or false negative before calculating sensitivity and specificity of the test)
|
Table of Number of Pregnancies and Urine Pregnancy test Results |
|||
|
Patient is Pregnant? |
Patient has positive pregnancy test |
Patient has negative pregnancy test |
Row totals |
|
Yes |
32 |
8 |
40 |
|
No |
5 |
143 |
148 |
Homework Answers
The sensitivity is given by the proportion of actual positives that are correctly identified as such. That is, the proportion of pregnant women among all the women that had a positive test, this is:
The specificity is given by the actual negatives that are correctly identified as such. That is, the proportion of non-pregnant women that actually got a negative test:
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Calculate the % sensitivity and % specificity of urine
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