lecture 6 (test 1) Flashcards
(17 cards)
process of classifying people as to whether they are likely to have or develop a disease
screening
prevention seeking to totally prevent new cases of a disease from developing
primary
prevention seeking to reduce the number of existing cases of a disease in a population
secondary
seking to limit disability resulitng from disease and improve function
tertiary
difference between screening and diagnosis
screening - before systoms develop
diagnosis - after systoms develop
the ability of a test to consistantly give the same results
reliability
the ability of a test to distinguish b/w who HAS the disease and who DOES NOT have the disease
validity
what is the ‘gold standard”
criterion use to measure the true disease
the ability of a test to identify correctly those who HAVE the disease
sensitivity
the ability of a test to identify correctly those who DO NOT have the disease
specificity
what is a true positive screening test
have disease with positive result
what is a true negative screenign test
no disease and negative results
what is a false positive screening test
no disease, positive results
what is a false negative screening test
has disease, negative results
what is the equation for sensitivity
[total positives/(total positives + false negatives)] * 100
what is the equation for specificity
[true negatives/(false positives + true negatives)] * 100
are we more concerned with a screening test that has a high sensitivity rate or specificity rate
high sensitivity
