Practical Use of Likelihood Ratios
So, how does one use likelihood ratios practically?
Essentially likelihood ratios are useful when trying to determine the final assessment of likelihood of disease after the use of a diagnostic test.
| In other words: Initial assessment of likelihood of disease = pre-test probability
Final assessment of likelihood of disease = post-test probability
|
LRs help go from pre-test probability to post-test probability given a test result