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7 Cards in this Set

  • Front
  • Back
the %age of people who have the disease who test positive
(true positives)/(true positives + false negatives)
gives false negative rate (1-sensitivity)
%age of people who don't have the disease who test negative
(true negatives)/(true negatives + false positives)
gives false positive rate (1-specificity)
lead time bias
the erroneous inference of reduced mortality resulting merely from earlier detection of a disease, and not from greater effectiveness of earlier treatment
length bias
the erroneous inference of reduced mortality associated with screening caused by the disproportionate detection of less aggressive disease among screened patients
positive predictive value
% of people who test positive who actually have the disease
(true positives)/(true positives + false positives)
pre-test probability
the prevalence of the disease
procedures performed to detect asymptomatic disease.