| A | B |
|---|
| normal | includes those persons in the nondiseased population, fits data to a gaussian distribution |
| reference range | set of values of a measured quantity obtained from a group of individuals in a defined state of "health", should be further defined by other variables |
| prevalence | the number of cases of a disease in a certain population at a certain time |
| incidence | the number of new cases of a disease in a population during a specified time period |
| sensitivity | the probability that a laboratory test is positive in the presence of disease |
| specificity | the probability that a laboratory test will be negative in the absence of disease |
| true positives | the number of diseased pationts correctly classified by a test |
| true negatives | the number of patients without the disease correctly classified by a test |
| false positives | the number of patients without a disease misclassified by a test |
| false negatives | the number of patients with a disease misclassified by a test |
| predictive values | the probablility that a laboratory result accurately reflects the presence or absence of a disease |
| accuracy | how closely the measurement approaches the true value |
| precision | reproducibility |
