Screening And Diagosis Flashcards
What are then key aspects of screening
Applied to populations of apparently well individualised
Illness, If present, is asymptomatic
Allows for earlier detection
What is the assumption applied to screening
That earlier detection and treatment is more effective
What is the difference between screening test results and diagnostic test results
Screening - determines whether you’re likely or unlikely to have the disease
Diagnostic - determines whether or not you have the disease
What is reliability
The ability to produce similar results under different conditions
What is validity
The ability to discriminate between healthy and diseased individuals
What is sensitivity
The proportion of all people with the disease who test positive
What is specificity
The proportion of all people without the disease who test negative
What tests do you use to rule out disease
Highly sensitive
