Saturday, 2 July 2016


It "is the extent to which planned outcomes, goals, or objectives are achieved as a result of an activity, strategy, intervention or initiative intended to achieve the desired effect, under ordinary circumstances (not controlled circumstances such as in laboratory)." For example, "a vaccine is effective when it is capable to produce the desired effect (protection against disease) in the population, under ordinary circumstances. Being effective means achieving organizational goals. Being efficient means achieving goals with little wasted resources. Effectiveness comes first."
Bibliographic reference: (n.d.). Effectiveness, Efficiency, and Efficacy : Definition - Health Care and Health Care Informatics Terms - Define Efficiency, Effectiveness, and Efficacy. [online] Available at: [Accessed 2 Jul. 2016].