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To appreciate these distinctions, it is important <strong>to</strong> recognize the relationships among<br />
purpose, inputs, activities (or processes), outputs, outcomes, and impacts. When<br />
considering performance of any kind one may ask:<br />
Purpose: what are the objectives (i.e., intended outputs, outcomes, and impacts) of<br />
the project?<br />
Inputs: what resources are required <strong>to</strong> enable the project?<br />
Activities (or processes): what does the project do?<br />
Outputs: what does the project produce?<br />
Outcomes: what does the project achieve?<br />
Impacts: how does the project contribute <strong>to</strong> high level strategic goals? 20<br />
For example, a program of vaccination may be considered as follows:<br />
<br />
<br />
<br />
<br />
<br />
<br />
Purpose: <strong>to</strong> reduce the occurrence and spread of disease.<br />
Inputs: medical professionals, vaccines, equipment, facilities, and other resources.<br />
Activities (or processes): promotional campaigns, administration, coordination of<br />
patients, medical professionals, and medical facilities.<br />
Outputs: targeted levels of vaccination.<br />
Outcomes: targeted levels of reduced incidence of disease.<br />
Impacts: long-term social benefits related <strong>to</strong> a healthier and more productive<br />
population.<br />
Economy relates <strong>to</strong> the use of inputs. Efficiency relates <strong>to</strong> the way in which inputs are used<br />
<strong>to</strong> achieve outputs. Effectiveness is a measure of performance relating actual outputs,<br />
outcomes, and impacts <strong>to</strong> intended results (as defined in the objectives) as well as desirable<br />
or potential results (based on other criteria).<br />
These relationships are illustrated in the graphic below.<br />
Relationship Among Economy, Efficiency, and Effectiveness 21<br />
In evaluating the three Es, performance auditing usually involves consideration of related<br />
dimensions, such as results (outputs, outcomes, and impacts), timeliness, and quality.<br />
20<br />
See Indica<strong>to</strong>rs of Inputs, Activities, Outputs, Outcomes and Impacts in Security and<br />
Justice Programming, Department of International Development, 2013.<br />
21<br />
Based on Figure 1, <strong>Performance</strong> <strong>Audit</strong> ISSAI Implementation Handbook, IDI, 2021.<br />
16