This calculator can determine diagnostic test characteristics
(sensitivity, specificity, likelihood ratios) and/or determine
the post-test probability of disease given given the pre-test probability
and test characteristics. Given sample sizes, confidence intervals are
Fill out one of the sections below on the left, and then click on the 'Compute'
button. Sections you don't fill out will be computed for you, and
the nomogram on the right will display the probability that a patient
has the disease after a positive or negative test.