GIM

SpIN (rules in), SnOUT (rules out)
Probabilities
- Pos. LHR = Sens / (1-Specificity)
- positive LRs of 2, 5, and 10 increase the probability of disease by 15%, 30%, and 45%, respectively. An appendiceal CT scan has a positive LR for appendicitis of 13.3; therefore, if the pretest probability of appendicitis was 50%, a positive scan result increases the probability for disease by roughly 45%, resulting in a posttest probability of 95% (45% added to the 50% pretest probability of disease).

Author

desaix

269942

Card Set

GIM

Description

GIM

Updated

2014-04-09T20:00:53Z

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