Simple presentation of test accuracy may lead to inflated disease probabilities

EDITOR—We found that conveying information on the accuracy of tests in non-technical language improved doctors' ability to estimate disease probabilities accurately.1 We investigated whether doctors might misuse such non-technical presentation when considering the probability of endometrial cancer in a patient with positive results on transvaginal ultrasonography. View this table: Distributions of attributed likelihood ratios in three groups given different summaries of information on diagnostic accuracy We presented 263 general practitioners in Switzerland with a pre-test probability of 10%, information that …