Skip to main content

Issues in the design and interpretation of studies to evaluate the impact of community-based interventions

Buy Article:

$51.00 plus tax (Refund Policy)

Abstract:

Increasingly, epidemiologists are faced with the need to evaluate the impact of an intervention that is delivered at the level of a community or cluster of individuals, rather than at the individual level. This has profound implications for the design and interpretation of a study to evaluate its impact. We start by discussing the issues arising in the extension of the randomized double-blind controlled trial methodology to the evaluation of interventions delivered to clusters of individuals, or to whole communities, where the unit of randomization is a cluster of individuals rather than an individual. We then consider alternative approaches to design, discuss their relative strengths and weaknesses and present a framework of design options. Finally we propose a pragmatic approach to evaluation design in this setting. We believe that the answer lies in the judicious selection of different design elements, combined in such a way that when the evidence from each is presented together, a clear picture of the impact of the intervention emerges. We illustrate this using an example from the recent literature.

Keywords: Study design; community-based interventions; developing countries; evaluation

Document Type: Original Article

DOI: http://dx.doi.org/10.1046/j.1365-3156.1997.d01-188.x

Affiliations: 1: Department of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, UK, 2: Departamento de Medicina Social, Universidade Federal de Pelotas, Pelotas, Brazil, 3: Department of International Health, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, USA

Publication date: November 1, 1997

bsc/tmih/1997/00000002/00000011/art00003
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more