Suppose a company is developing a new pregnancy test. The test was put through a trial in which data was collected on 500 women who took the pregnancy test. The results of the trial are summarized below, in what is called a two-way table,
A two-way table displays the counts for certain groups. For example, the value in the first row of numbers and the first
column of numbers of the table shows that 170 of the 500 women were pregnant and had a positive pregnancy test.
Answer the following questions to increase your familiarity with two-way tables.
Pregnancy Test Woman is Woman Is Not
Trial Results Pregnant Pregnant
Pregnancy Test is
170
6
Positive
Pregnancy Test is
34
290
Negative
Now, pregnancy is not a disease, but it is a medical condition, so the terms sensitivity and specificity can still be used when
describing a pregnancy test, based on whether the woman is or is not pregnant
Make sure that you fill in each answer area before checking "How Did I Do?".
a. What is the sensitivity of this pregnancy test, based on the collected data?