Pre- and post-test probability: Difference between revisions

Content deleted Content added
Estimation of post-test probability: erased disadvantages of LR
By likelihood ratio: +continuous values or more than two outcomes
Line 107:
File:Pre- and post-test probabilities for various likelihood ratios.png|Relation between pre-and post-test probabilities for various likelihood ratio positives (upper left half) and various likelihood ratio negatives (lower right half).
</gallery>
 
It is possible to do a calculation of likelihood ratios for tests with continuous values or more than two outcomes which is similar to the calculation for dichotomous outcomes. For this purpose, a separate likelihood ratio is calculated for every level of test result and is called interval or stratum specific likelihood ratios.<ref>{{cite journal | doi = 10.1067/mem.2003.274 | author = Brown MD, Reeves MJ. | year = 2003 | title = Evidence-based emergency medicine/skills for evidence-based emergency care. Interval likelihood ratios: another advantage for the evidence-based diagnostician | url = | journal =Ann Emerg Med | volume = 42 | issue = 2| pages = 292-297 | pmid = 12883521 }}</ref>
 
====Example====