Question

In: Statistics and Probability

QUESTION 1 If a person doesn’t have a disease and they test negative for it, it...

QUESTION 1

If a person doesn’t have a disease and they test negative for it, it is an example of:

False positive

True Positive

True negative

False negative

QUESTION 2

When collecting data with multiple researchers, how a researcher views the data can affect the outcome of the study. To avoid this issue a researcher should assess:

Sensitivity

Homogeneity

Inter-Rater reliability

Content validity

QUESTION 3

The likelihood of a sick patient testing positive for a disease is:

Specificity

Reliability

Predictive Validity

Sensitivity

None of the above

QUESTION 4

You have discovered a new tool that records the outcome of sexually transmitted diseases. A previously validated tool reports that genital herpes is 40% in Chicago. The correlation between the old tool and your tool is .5. This result indicates:

Convergent validity

Divergent validity

Content validity

Ratio

QUESTION 5

A test is developed for adolescent Hispanic mothers. The wording of the test is at a fifth grade level and in English. If the participants cannot read English, what does this affect?

Validity

Sampling stability

Measurement capacity

Inter-rater reliability

QUESTION 6

A doctor at Lakeside hospital discovered a test that was a very successful at correctly identifying when a person has the H1N1 virus. This would be a measure of:

Sensitivity

Specificity

Convergent validity

Homogeneity

QUESTION 7

If a patient does not have a disease, the probability that the test for the disease will be negative:

Readability

Specificity

Sensitivity

Negative predictive value

QUESTION 8

The Chembio test can be used to screen HIV-infected patients for hepatitis C. According to the CDC, the prevalence of HIV and HCV co-infection is approximately 25%. Use the outcome from the screening test (results below) for the Chembio HCV Rapid Test to determine the likelihood that a randomly selected HIV-infected patient will also have an HCV infection given their Chembio HCV Rapid Test returns a positive result. That is, determine P(HCV Infection | Positive Chembio HCV Test).

Round answer to nearest tenth of a percent (i.e. 79.2%).

Positive Chembio Test Result

Negative Chembio Test Result

Hepatitis C

335

37

No Hepatitis C

15

1153

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