Vascular Ch 34

Question 1

What is the “Gold Standard”

Answer 1

used to compare one form of a newer diagnostic test with another well established and reliable test

Question 2

The Gold Standard is

Answer 2

well established and reliable

Question 3

Gold standard is typically

Answer 3

angiography

Question 4

Number of studies performed by ultrasound, which state that disease is present and agree with the gold standard

Answer 4

true positives

Question 5

Number of studies performed by ultrasound, which state that disease is NOT present and agree with the gold standard

Answer 5

true negatives

Question 6

Studies that are reported as positive by ultrasound but are found to be negative by the gold standard

Answer 6

false positives

Question 7

Ultrasound states a study is negative; however, gold standard identifies disease

Answer 7

false negatives

Question 8

Percentage of correct results overall, degree of “closeness”

Answer 8

accuracy

Question 9

Accuracy is calculated as the

Answer 9

total number of correct tests divided by the total number of all tests

Question 10

The ability to correctly identify disease when disease is truly present

Answer 10

sensitivity

Question 11

The ability of a test to identify something as normal

Answer 11

specificity

Question 12

Proportion of patients with positive tests that are correctly identified

Answer 12

positive predictive value

Question 13

Calculated by dividing the true negatives by all negative test results

Answer 13

negative predictive value