Hypothesis Testing UPDATED ACTUAL
Exam Questions and CORRECT Answers
Diagnostic test - CORRECT ANSWER - imperfect process of establishing a diagnosis that
depends on probability rather than certainty
Gold standard- - CORRECT ANSWER - most accurate test available, to which the
accuracy of all other tests can determined
sensitivity - CORRECT ANSWER - proportion of people WITH the disease who would
have POSITIVE test result if they get tested
a sensitive test RARELY misses people with the disease
(DO HAVE)
Specificity - CORRECT ANSWER - proportion of people WITHOUT the disease who
would have a TEST RESULT
a specific test will RARELY misclassify people as having the disease when they do not
(DON'T HAVE)
POTIIVE PREDICTIVE VALUE - CORRECT ANSWER - probability of disease in a
patient with a POSITIVE TEST RESULT
positive result of a test with a HIGH POSITIVE PREDICTION VALUE means that the patient
HAS THE DISEASE
, NEGATIVE PREDICTIVE VALUE (NPV) - CORRECT ANSWER - the probability of
not having the disease when the test result is negative (normal)
a negative result of a test with a high negative predictive value LIKELY means that the patient
DOES NOT have the disease
sensiviity ? - CORRECT ANSWER - patient has the disease what are the chances that the
test will be positive?
specificity ? - CORRECT ANSWER - does not have the disease what are the chances that
the test will be negative?
PPV ? - CORRECT ANSWER - patient's test result is positive, what are the chances that
my patient does have the disease?
NPV ? - CORRECT ANSWER - patient's test result is negative, what are the chances that
my patient does not have the disease?
Ideal - CORRECT ANSWER - test that is both highly sensitive and highly specific
Vice versa case - CORRECT ANSWER - Sensitivity is increased at an expense of
specificity
location of the cutoff point, defining the difference between normal and abnormal test result is
SUPPORTED BY REASON or ARBITRARY - CORRECT ANSWER - FALSE;
is is ARBITRARY
increasing cutoff - CORRECT ANSWER - decreases sensitvity
increases specificity
Exam Questions and CORRECT Answers
Diagnostic test - CORRECT ANSWER - imperfect process of establishing a diagnosis that
depends on probability rather than certainty
Gold standard- - CORRECT ANSWER - most accurate test available, to which the
accuracy of all other tests can determined
sensitivity - CORRECT ANSWER - proportion of people WITH the disease who would
have POSITIVE test result if they get tested
a sensitive test RARELY misses people with the disease
(DO HAVE)
Specificity - CORRECT ANSWER - proportion of people WITHOUT the disease who
would have a TEST RESULT
a specific test will RARELY misclassify people as having the disease when they do not
(DON'T HAVE)
POTIIVE PREDICTIVE VALUE - CORRECT ANSWER - probability of disease in a
patient with a POSITIVE TEST RESULT
positive result of a test with a HIGH POSITIVE PREDICTION VALUE means that the patient
HAS THE DISEASE
, NEGATIVE PREDICTIVE VALUE (NPV) - CORRECT ANSWER - the probability of
not having the disease when the test result is negative (normal)
a negative result of a test with a high negative predictive value LIKELY means that the patient
DOES NOT have the disease
sensiviity ? - CORRECT ANSWER - patient has the disease what are the chances that the
test will be positive?
specificity ? - CORRECT ANSWER - does not have the disease what are the chances that
the test will be negative?
PPV ? - CORRECT ANSWER - patient's test result is positive, what are the chances that
my patient does have the disease?
NPV ? - CORRECT ANSWER - patient's test result is negative, what are the chances that
my patient does not have the disease?
Ideal - CORRECT ANSWER - test that is both highly sensitive and highly specific
Vice versa case - CORRECT ANSWER - Sensitivity is increased at an expense of
specificity
location of the cutoff point, defining the difference between normal and abnormal test result is
SUPPORTED BY REASON or ARBITRARY - CORRECT ANSWER - FALSE;
is is ARBITRARY
increasing cutoff - CORRECT ANSWER - decreases sensitvity
increases specificity
