Quality Assurance ch. 36

Question 1

sensitivity

Answer 1

the ability of a test to detect disease

Question 2

sensitivity calculation

Answer 2

# of true positive noninvasive diagnoses/ # of all positive diagnoses by the gold standard
TP/(TP + FN)

Question 3

specificity

Answer 3

the ability of a test to identify normality

Question 4

specificity calculation

Answer 4

# of true negative noninvasive diagnoses/ # of all negative diagnoses by the gold standard
TN/(TN + FP)

Question 5

positive predictive value

Answer 5

the percentage of noninvasive test results that accurately predict abnormality

Question 6

positive predictive value calculation

Answer 6

# of true positive noninvasive tests/ # of all positive noninvasive studies
TP/(TP + FP)

Question 7

negative predictive value

Answer 7

the percentage of noninvasive test results that accurately predict normality

Question 8

negative predictive value calculation

Answer 8

# of true negative noninvasive tests/ number of all negative noninvasive studies
TN/ (TN + FN)

Question 9

accuracy

Answer 9

percentage of correct noninvasive diagnoses

Question 10

accuracy calculation

Answer 10

total # of correct tests/ total # of all studies

TP + TN)/ (TP + FP + FN + TN