Evaluating Precision of a Trachomatous Trichiasis (TT) Super Survey with Modulating Sample Sizes in Tanzania.

Autor: Flueckiger RM; Global Health Division, International Development Group, RTI International, Washington, USA., Stelmach R; Global Health Division, International Development Group, RTI International, Washington, USA., Burgert-Brucker CR; Global Health Division, International Development Group, RTI International, Washington, USA., Courtright P; Kilimanjaro Centre for Community Ophthalmology, Division of Ophthalmology, University of Cape Town, Cape Town, South Africa., Kabona G; Neglected Tropical Disease Control Program, Ministry of Health and Social Welfare, Dar Es Salaam, Tanzania., Mosher AW; Bureau for Global Health, United States Agency for International Development, Washington, USA., Mwingira UJ; Neglected Tropical Disease Control Program, Ministry of Health and Social Welfare, Dar Es Salaam, Tanzania., Harding JC; Helen Keller International, Dar Es Salaam, Tanzania., Simon A; Neglected Tropical Disease Control Program, Ministry of Health and Social Welfare, Dar Es Salaam, Tanzania., Ngondi J; Global Health Division, International Development Group, RTI International, Dar Es Salaam, Tanzania.
Jazyk: angličtina
Zdroj: Ophthalmic epidemiology [Ophthalmic Epidemiol] 2022 Aug; Vol. 29 (4), pp. 394-400. Date of Electronic Publication: 2021 Aug 11.
DOI: 10.1080/09286586.2021.1950775
Abstrakt: As trachoma programs move towards eliminating trachoma as a public health problem, the number of surveys necessary to evaluate the status of trachomatous trichiasis (TT) increases. Currently, the World Health Organization endorses a district-level population-based prevalence survey for trachoma that involves a two-stage cluster design. We explored the validity of implementing this survey design in larger geographic areas to gain cost efficiencies. We evaluated the change in precision due to combining geographically contiguous and homogenous districts into single evaluation units (EUs) and modulating the sample size by running simulations on existing datasets. Preliminary findings from two opportunities in Tanzania show variability in the appropriateness in conducting this survey across larger geographies. These preliminary findings stress the importance of determining what is meant by homogeneity in terms of TT before combining multiple districts into a single EU.
Databáze: MEDLINE
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