*Intestinal problems (lecture 10) Flashcards Preview

Study Notes - Gastroenterology > *Intestinal problems (lecture 10) > Flashcards

Flashcards in *Intestinal problems (lecture 10) Deck (12)
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1

What is population screening?

a test being offered to all individuals in an eligible group, usually defined by age, as part of an organised program.

2

What is opportunistic screening?

Opportunistic screening happens when someone asks their doctor or health professional for a check or test, or a check or test is offered by a doctor or health professional

3

Key screening programmes in the UK? (4)

Cervical cancer
Breast cancer
Bowel cancer
AAA

4

What is being taken into consideration when evaluating the reliability of a screening tool?

Repeatability of test
Repeatability of the interpretation

5

What is considered when evaluating validity of a screening tool?

Sensitivity
Specificity
Positive predictive value
Negative predictive value

6

What is the sensitivity of a screening tool?

Proportion of those who have the disease who are correctly identified by a +ve test

7

What is the specificity of a screening tool?

Proportion of those who do not have the disease who are correctly identified by a -ve test

8

What is the positive predictive value of a screening tool?

Proportion of those who test positive who actually have the disease

9

What is the negative predictive value?

Proportion of those who test negative who actually do not have the disease

10

What is the uptake for a screening programme?

the number taking part in a voluntary programme

11

What is the yield for a screening programme?

number of previously undiagnosed cases picked up by a screening test or programme

12

What is the criteria for screening? (7)

Common/ serious condition
Well defined latent period
Suitable test available (must be sensitive and specific)
Effective treatment
Early detection improves prognosis
Harm of screening small
Cost justified