Cost-Benefit Analysis converts effects into the same monetary terms as the costs and compares them. Cross-Sectional Study the observation of a defined population at a single point in time or time interval. Exposure and outcome are determined simultaneously. See also glossary of study designs . Decision Analysis is the application of explicit, quantitative methods to analyse decisions under conditions of uncertainty.
Event Rate is the proportion of patients in a group in whom an the event is observed.
Thus, if out of 100 patients, the event is observed in 27, the event rate is 0.27. Evidence-Based Medicine is the conscientious, explicit and judicious use of current best evidence in making decisions about the care of individual patients. The practice of evidence-based medicine means integrating individual clinical expertise wi th the best available external clinical evidence from systematic research. What it is and what it isn't Likelihood Ratio is the likelihood that a given test result would be expected in a patient with the target disorder compared to the likelihood that the same result would be expected in a patient without that disorder. See also Calculating Sensitivity and Specificity and on samples of Likelihood Ratios .