Pretest Probability
Pre-test probability
The proportion of people with the target disorder in the population at risk at a specific time (point prevalence) or time interval (period prevalence)
- The prevalence is the proportion of a population that have the condition at a point in time whilst the incidence is the rate at which new cases occur in a population during a specified time period.
For example, the prevalence of rheumatoid arthritis in the UK is 1%