OBGYN MSc Stat Module (2016-2018)
StatPgm 5a. Tests : Binary Tests
Please note : the data presented in all course material for the statistical module are generated by computers to demonstrate the methodologies, and should not be confused with actual clinical information
Also : Programs can have default example data pre-inserted, or inserted when the Example button is clicked, for testing. Students can replace them with his/her own data
StatPgm 5a i. Qualities of a Binary Test Predicting a Binary Outcome
Outcome PositiveOutcome Negative
Test Positive
Test Negative

StatPgm 5a ii. Bayesian Conversion of Pre-test to Post-test Probability Using Likelihood Ratio
The calculation is based on
    Pre-test Probability, which is either known, estimated from past data, or just a believe or guess
    The Likelihood Ratio, usually calculated from research using a reference set of data
Pre-test Probability
Likelihood Ratio