Flashcards in *Intestinal problems (lecture 10) Deck (12)
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.
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
Key screening programmes in the UK? (4)
What is being taken into consideration when evaluating the reliability of a screening tool?
Repeatability of test
Repeatability of the interpretation
What is considered when evaluating validity of a screening tool?
Positive predictive value
Negative predictive value
What is the sensitivity of a screening tool?
Proportion of those who have the disease who are correctly identified by a +ve test
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
What is the positive predictive value of a screening tool?
Proportion of those who test positive who actually have the disease
What is the negative predictive value?
Proportion of those who test negative who actually do not have the disease
What is the uptake for a screening programme?
the number taking part in a voluntary programme
What is the yield for a screening programme?
number of previously undiagnosed cases picked up by a screening test or programme