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19 Cards in this Set

  • Front
  • Back
in a decision analysis, the expected value of each strategy calculated using best estimates of each probabiilty and utility
baseline analysis
intermediate branch in decision tree from which chance events occur
chance node
a formal, quantitative approach to examining trade-offs when making patient-care decisions
decision analysis
"proximal" branch in decision tree that specifies clinical strategies under consideration
decision node
a diagram used in decision analysis to illustrate the possible clinical options and outcomes
decision tree
the relative value of clinical strategy, often expressed in quality-adjusted life-years
expected value
probability of negative test result in a patient who has the disease being tested for. Equal to 1-sensitivity
false negative rate
false positive rate
in a decision analysis, the process of calculating expected values by summing outcome utilities, each weighted by its probability of occurance
fold back
a diagnostic test used to ascertain the true disease status when estimating the sensitivity and specificity of another diagnositc test
gold standard test
probability a patient does not have the disease being tested for following a negative diagnositic test
negative predictive value
the accuracy parameters of a diagnositic test: sensitivity, specificity, positive predictive value and negative predictive value
operating characteristics
probability a patient has the disease being tested for following a positive diagnostic test
positive predictive value
an estimate of the probability a patient has a given disease after the results of a diagnostic test are known
post-test probability (posterior probability)
an estimate of the probability a patient has a given disease prior to the use of a diagnostic test
pre-test or prior probability
the process of computing posivitive predictive value and negative predictive value from pre-test probability
probability revision
common measure of utility based on multiplying life expectancy by a quality adjustment factor
quality-adjusted life years
probability of a positive test result in a pt who has a disease being tested for
sensitivity (true-positive)
process of testing stability of a decision analysis by allowing input probabilities and utilities to vary
sensitvity analysis