Difference between Efficacy, Effectiveness and Efficiency - Epidemiology
Posted: 13 Jul 2021, 12:09
Efficacy;
Achieving its stated clinical goal.
Demonstrated under optimal circumstances in a prospective randomized controlled trial (RCT) but the results are limited to the study subjects.
Effectiveness;
Producing greater benefit than harm
Assessed under ordinary circumstances in the more general population, often by way of an observational yet analytic longitudinal cohort study.
Efficiency;
Health status improvement for a given amount of resources ($) expended.
Determined via a cost-effectiveness analysis or cost-utility analysis
Achieving its stated clinical goal.
Demonstrated under optimal circumstances in a prospective randomized controlled trial (RCT) but the results are limited to the study subjects.
Effectiveness;
Producing greater benefit than harm
Assessed under ordinary circumstances in the more general population, often by way of an observational yet analytic longitudinal cohort study.
Efficiency;
Health status improvement for a given amount of resources ($) expended.
Determined via a cost-effectiveness analysis or cost-utility analysis