Screening

Question 1

Mass screening

Answer 1

Applied to entire population

Question 2

Selective or targeted screening

Answer 2

Screen only the high risk population

Question 3

Periodic screening

Answer 3

Done in a regular basis

Question 4

Sensitivity

Answer 4

Test ability to identify true positives

Poor sensitivity increases the false negatives

Question 5

Specificity

Answer 5

The ability of the test to identify the true negatives

Poor specificity increases false positives

Question 6

Selection of screen able population

Answer 6

Significance : is this really a public health concern?
Detection: can we screen this disease, correct instruments
Should screening been done? EBM , benefits of knowing it early

Question 7

Objectives of screening

Answer 7

Detect the disease in The early stages in order To treat it early and detect its prognosis

Reduce the cost of the disease if found in the late stages

Question 8

National guidelines for health care reform

Answer 8

USPSTF : US preventive services and task forces
ACA….authorized national prevention strategy
National prevention strategy

Question 9

USPSTF
a
B
C
D
I

Answer 9

A B provide screening
C. selectively provide this service
D discourage
I inconcsive

Question 10

Routine breast exam ; D
Mammogram less than 50 ; D
Mammogram 50-74; B
Testicular cancer screen with PSA D

Answer 10

Drug use in children and adolescent: D

Question 11

Objectives of screening

Limitations of screening

Answer 11

Not 100 % accurate
If the test has high sensitivity has high true positives( good )
If the test has low sensitivity has high false negatives
If the test has high specifics has high true negatives(good )
If the test has low specificity it has high false positives

Question 12

Implications of screening
False +
False -

Answer 12

False +: undo worry, social stigma, more invasive testing,unnecessary treatment
False -: may loose opportunity for early intervention, may engage in risky behaviors due to negative states