Pre-test Probability: It is defined as the probability of a patient having the suspected disease before application of a diagnostic test.
Determining the pre-test probability is the first step in making a clinical diagnosis.
Pre-test Odds: It is defined as the odds that a patient has the suspected disease before application of a diagnostic test.
References:
- Šimundić, A.M., 2009. Measures of diagnostic accuracy: basic definitions. EJIFCC, 19(4), p.203.
- McGee, S., 2012. Evidence-based physical diagnosis. Elsevier Health Sciences.
- Fletcher, R.H., Fletcher, S.W. and Fletcher, G.S., 2012. Clinical epidemiology: the essentials. Lippincott Williams & Wilkins.