Chapter 1 - Diagnostic Testing Flashcards Preview

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Flashcards in Chapter 1 - Diagnostic Testing Deck (12):
0

List three criteria for a screening test.

Criteria for screening test: ↑sensitivity and prevalence; cost-effective; treatable

1

What is the overall best screening test for cancer?

Cervical Pap: overall best screening test for cancer

2

Give an example of a test used to confirm a disease.

Confirm disease: serum troponins to diagnose AMI

3

Give three examples of monitoring disease status.

Monitor disease: HbA1c, INR, pulse oximeter

4

What are the terms for test results for people with a specific disease?

Test results in people with disease: TP and FN

5

What are the terms for test results for people without disease?

Test results in people without disease: TN and FP

6

What is the formula to calculate sensitivity? What is sensitivity?

Sensitivity = TP ÷ (TP + FN); “positivity” in disease

7

What are two features of a test with 100% sensitivity?

Test with 100% sensitivity: normal result TN; positive result TP or FP

8

What is the formula for calculating specificity? What is specificity?

Specificity = TN ÷ (TN + FP); “negativity” in health

9

What are two features of a test with 100% specificity?

Test with 100% specificity: positive test TP; negative test TN or FN

10

What is the usefulness of a test with 100% sensitivity?

Usefulness of test with 100% sensitivity: exclude disease when test returns normal

11

What is the usefulness of a test with 100% specificity?

Usefulness of test with 100% specificity: distinguish TP from FP test result