The Data Envelope Analysis (DEA) technique is proposed as an aid to the ex-post evaluation of projects in operation. DEA was used to calculate the relative efficiency of performance of six water and four sanitation projects in Ghana.
Title | Appraisal and evaluation : a new approach |
Publication Type | Conference Paper |
Year of Publication | 1991 |
Authors | Franceys, R, Barker, P, Akosa, G |
Pagination | P. 127-130: 2 tab. |
Date Published | 1991-01-01 |
Keywords | efficiency, evaluation, ghana, projects, sanitation, water supply |
Abstract | The Data Envelope Analysis (DEA) technique is proposed as an aid to the ex-post evaluation of projects in operation. DEA was used to calculate the relative efficiency of performance of six water and four sanitation projects in Ghana. Efficiency was defined as the ratio of the weighted sums of the outputs to the weighted sums of the inputs. In this study reliability, utilization and convenience to consumers were considered as desirable output factors. Health impacts were not taken into account as their direct measurement was stated to be too difficult in practice. The following inputs were selected as appropriate: technical, financial, economic, institutional, social, and environmental. From the analysis of the Ghanian projects, the two extremes of water technology, piped urban water supply and hand dug wells, proved to be the most efficient. Of the sanitation systems the Accra sewerage project had the lowest efficiency score, while traditional pit latrines had the highest. |
Custom 1 | 202.5, 302.5 |