Items tagged “screening test”
3 results found
Article
Quadruple screening test
The quadruple screening test, also known as the quad screen, AFP Plus quad test or multiple marker screening test, is a maternal antenatal screening blood test that can be used in conjunction with other investigations e.g. ultrasound soft markers, to estimate the risk of aneuploidy 1.
This is ...
Case
Screening and screening biases
Published
09 Oct 2023
50% complete
Diagram
Article
Number needed to screen
The number needed to screen (NNS) is the number of patients that need to undergo screening to prevent one death by the disease being screened for1,2. The number is calculated by taking the reciprocal of the absolute risk reduction as follows:
calculate the risk (probability) of death from the d...