{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T05:57:30Z","timestamp":1773813450896,"version":"3.50.1"},"reference-count":42,"publisher":"American Society of Tropical Medicine and Hygiene","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2018,10,3]]},"abstract":"<jats:p>In collaboration with the health ministries that we serve and other partners, we set out to complete the multiple-country Global Trachoma Mapping Project. To maximize the accuracy and reliability of its outputs, we needed in-built, practical mechanisms for quality assurance and quality control. This article describes how those mechanisms were created and deployed. Using expert opinion, computer simulation, working groups, field trials, progressively accumulated in-project experience, and external evaluations, we developed 1) criteria for where and where not to undertake population-based prevalence surveys for trachoma; 2) three iterations of a standardized training and certification system for field teams; 3) a customized Android phone\u2013based data collection app; 4) comprehensive support systems; and 5) a secure end-to-end pipeline for data upload, storage, cleaning by objective data managers, analysis, health ministry review and approval, and online display. We are now supporting peer-reviewed publication. Our experience shows that it is possible to quality control and quality assure prevalence surveys in such a way as to maximize comparability of prevalence estimates between countries and permit high-speed, high-fidelity data processing and storage, while protecting the interests of health ministries.<\/jats:p>","DOI":"10.4269\/ajtmh.18-0082","type":"journal-article","created":{"date-parts":[[2018,7,24]],"date-time":"2018-07-24T07:00:49Z","timestamp":1532415649000},"page":"858-863","source":"Crossref","is-referenced-by-count":65,"title":["Quality Assurance and Quality Control in the Global Trachoma Mapping Project"],"prefix":"10.4269","volume":"99","author":[{"given":"Anthony W.","family":"Solomon","sequence":"first","affiliation":[{"name":"Clinical Research Department, London School of Hygiene & Tropical Medicine, London, United Kingdom;"},{"name":"London Centre for Neglected Tropical Disease Research, London, United Kingdom;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rebecca","family":"Willis","sequence":"additional","affiliation":[{"name":"Task Force for Global Health, Decatur, Georgia;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alexandre L.","family":"Pavluck","sequence":"additional","affiliation":[{"name":"Task Force for Global Health, Decatur, Georgia;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wondu","family":"Alemayehu","sequence":"additional","affiliation":[{"name":"The Fred Hollows Foundation Ethiopia, Addis Ababa, Ethiopia;"},{"name":"Berhan Public Health and Eye Care Consultancy, Addis Adaba, Ethiopia;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ana","family":"Bakhtiari","sequence":"additional","affiliation":[{"name":"Task Force for Global Health, Decatur, Georgia;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sarah","family":"Bovill","sequence":"additional","affiliation":[{"name":"Sightsavers, Haywards Heath, West Sussex, United Kingdom;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brian K.","family":"Chu","sequence":"additional","affiliation":[{"name":"Task Force for Global Health, Decatur, Georgia;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paul","family":"Courtright","sequence":"additional","affiliation":[{"name":"ilimanjaro Centre for Community Ophthalmology, Division of Ophthalmology, University of Cape Town, Cape Town, South Africa;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael","family":"Dejene","sequence":"additional","affiliation":[{"name":"Michael Dejene Public Health Consultancy Services, Addis Ababa, Ethiopia;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Philip","family":"Downs","sequence":"additional","affiliation":[{"name":"Sightsavers, Haywards Heath, West Sussex, United Kingdom;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rebecca M.","family":"Flueckiger","sequence":"additional","affiliation":[{"name":"Task Force for Global Health, Decatur, Georgia;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Danny","family":"Haddad","sequence":"additional","affiliation":[{"name":"Emory Eye Center, Atlanta, Georgia;"},{"name":"Orbis International, New York, New York;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"P. 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