13) Diagnostic And Screening Test 2 Flashcards Preview

Research Methods > 13) Diagnostic And Screening Test 2 > Flashcards

Flashcards in 13) Diagnostic And Screening Test 2 Deck (4)
Loading flashcards...
1
Q

Replacement test

A
  • will have similar sensitivity and specificity as the existing test
  • may have other advantages such as safety, ease of execution or interpretation
2
Q

Triage test

A
  • doesnt matter as much if it incorrectly classifies someone without the disease, as thest positive because he will have the existing definitive test anyway
3
Q

Add-on test

A
  • used to maximize overall sensitivity of dagnostic pathways
  • often less accessible and more risky
4
Q

Baye’s theorem:

A
  • post-test odds = pretest odds * likelihoood ratio
  • pretest offs can be estimated using prevalence of disease in a similar clinical cohort in the literatyre, from your local database or clinical intuition
  • likelihood ratio: expresses how likely a test result is to be found in disease compared with non-diseased people