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Can the Case-Control Method Be Used to Assess the Impact of Water Supply and Sanitation on Diarrhoea? A Study in the Philippines

Citation

Baltazar, Jane C.; Briscoe, John; Mesola, Virginia; Moe, Christine L.; Solon, Florentino S.; VanDerslice, James; & Young, B. (1988). Can the Case-Control Method Be Used to Assess the Impact of Water Supply and Sanitation on Diarrhoea? A Study in the Philippines. Bulletin of the World Health Organization, 66(5), 627-635.

Abstract

Use of the case-control approach offers the promise of a rapid yet valid method for assessing the impact of improved environmental sanitation practices on diarrhoeal disease. Here, we report on a field trial of this approach in Cebu, Philippines. The results suggest that when only two exposure categories are used the method can be applied in the field and can yield valid and sufficiently precise results, rapidly and at a moderate cost. However, for studies of the interactions between water supply and excretal disposal (and other resk factors of diarrhoea), the sample sizes have to be increased substantially. It was found that among children of families with adequate environmental sanitation practices (both with respect to water supply and excreta disposal) the incidence of diarrhoea reported to clinics was 20% less, and that of pathogen-positive diarrhoea was 40% less, than that among children of families who did not have adequate practices.

URL

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2491179/?page=1

Reference Type

Journal Article

Year Published

1988

Journal Title

Bulletin of the World Health Organization

Author(s)

Baltazar, Jane C.
Briscoe, John
Mesola, Virginia
Moe, Christine L.
Solon, Florentino S.
VanDerslice, James
Young, B.