Effectiveness Of Screening

Question 1

Define screening

Answer 1

Systemic spplication of test process, to identify people at risk of a disorder to warrant further investigation

Question 2

Benefits of screening

Answer 2

Early disease detection
Better health outcomes
Prevent long yetm complications
Cost savings to the system

Question 3

Potential harm of screening

Answer 3

False positives and negatiges
Harm from unnecessary follow up (biopsies and treatment
Anxiety from unnecessary labelling
Costs of screening, intervention

Question 4

List 3 types of screening

Answer 4

1. Population based = attempts at entire population group (age or sex specific)
2. Selective screening (high risk groups)
3. Opportunistic casr detection (screen during routine health care encounters

Question 5

What does sensitivity and specificity mean

Answer 5

Higher seNsitivity = few false Negatives

Higher sPecificity = few false Positives

Question 6

Difference beween OVERDETECTION and FALSE positives

Answer 6

False positive = inaccurate test results

Overdetectiom = true result but doesn’t lead to better health outcomes

Question 7

When is screening appropriate

Answer 7

1. Disease is significant health problem
2. Test has VERY HIGH SPECIFICTIY and high sensitivity
3. Treatment more beneficial at early detection
4. Screening programs have been tested and found to be effective in good quality randomised controlled trials