ArticleOphthalmic epidemiology2015
The Global Trachoma Mapping Project: Methodology of a 34-Country Population-Based Study.
Article in Ophthalmic epidemiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 183 papers, 4 of them syntheses that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
183 citing papers in PubMed, 4 syntheses or guidelines pooled it, 237 citations in OpenAlex.
- Community-level trachoma ecological associations and the use of geospatial analysis methods: A systematic review.PLoS neglected tropical diseases · 2022Pooled it
- Estimating the Intracluster Correlation Coefficient for the Clinical Sign "Trachomatous Inflammation-Follicular" in Population-Based Trachoma Prevalence Surveys: Results From a Meta-Regression Analysis of 261 Standardized Preintervention Surveys Carried Out in Ethiopia, Mozambique, and Nigeria.American journal of epidemiology · 2020Pooled it
- A search for trachoma in Timor-Leste: no evidence to justify undertaking population-based prevalence surveys.Ophthalmic epidemiology · 2018Pooled it
- Progress Towards Elimination of Trachoma as a Public Health Problem in Eritrea: Results of a Systematic Review and Nine Population-based Prevalence Surveys Conducted in 2014.Ophthalmic epidemiology · 2018Pooled it
- Comparison of platforms for testing antibodies to Chlamydia trachomatis antigens in the Democratic Republic of the Congo and Togo.Scientific reports · 2021Trial
- Sensitivity and specificity of computer vision classification of eyelid photographs for programmatic trachoma assessment.PloS one · 2019Trial
- Comparison of Methods for Assessing Chlamydia trachomatis Transmission Intensity: A Systematic Review.The American journal of tropical medicine and hygiene · 2026Article
- Impact of two rounds of azithromycin mass drug administration on active trachoma and ocular Chlamydia trachomatis infection in Naoero.PLoS neglected tropical diseases · 2026Article
- Discrepancy Between Active Trachoma and Tests of Chlamydial Infection in Alto Amazonas, Peru.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2026Article
- National progress towards the elimination of trachomatous inflammation-follicular: analysis of 11 regions in Ethiopia.International health · 2026Article
- Does persistent active trachoma mandate antibiotic mass drug administration? A comparison of prevalence of trachomatous inflammation-follicular with that of conjunctival infection and anti-chlamydial antibodies, Western Province, Zambia.International health · 2026Article
- Trachoma prevalence surveys in 15 indigenous and non-indigenous evaluation units in Brazil, 2018-2023.International health · 2026Observational
- Monitoring of Chlamydia trachomatis infection and antibodies in low-prevalence districts of Amhara, Ethiopia: Insights from a hyper-endemic trachoma region.PLoS neglected tropical diseases · 2026Article
- Prevalence and associations of trachoma before interventions in six departments of the Colombian Amazon and Orinoquía.PloS one · 2026Article
- Surveys to substantiate elimination of trachoma as a public health problem in the Republic of the Union of Myanmar.International health · 2025Article
- Assessing trachoma elimination progress in districts with persistent trachoma, Western Province, Zambia.International health · 2025Article
- Using Model-Based Geostatistics to Refine Population-Based Estimates of Trachoma Prevalence: Update from a Technical Consultation.The American journal of tropical medicine and hygiene · 2025Article
- The prevalence of trachoma, ocular Chlamydia trachomatis infection and anti-Pgp3 antibodies in Choiseul Province, Solomon Islands.PLoS neglected tropical diseases · 2025Article
- Understanding the impact of covariates for trachoma prevalence prediction using geostatistical methods.BMC global and public health · 2025Article
- Trachoma.Lancet (London, England) · 2025Review
123 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
46 authors at 18 institutions in 7 countries.
Funding
Abstract
purposeTo complete the baseline trachoma map worldwide by conducting population-based surveys in an estimated 1238 suspected endemic districts of 34 countries.
methodsA series of national and sub-national projects owned, managed and staffed by ministries of health, conduct house-to-house cluster random sample surveys in evaluation units, which generally correspond to "health district" size: populations of 100,000-250,000 people. In each evaluation unit, we invite all residents aged 1 year and older from h households in each of c clusters to be examined for clinical signs of trachoma, where h is the number of households that can be seen by 1 team in 1 day, and the product h × c is calculated to facilitate recruitment of 1019 children aged 1-9 years. In addition to individual-level demographic and clinical data, household-level water, sanitation and hygiene data are entered into the purpose-built LINKS application on Android smartphones, transmitted to the Cloud, and cleaned, analyzed and ministry-of-health-approved via a secure web-based portal. The main outcome measures are the evaluation unit-level prevalence of follicular trachoma in children aged 1-9 years, prevalence of trachomatous trichiasis in adults aged 15 + years, percentage of households using safe methods for disposal of human feces, and percentage of households with proximate access to water for personal hygiene purposes.
resultsIn the first year of fieldwork, 347 field teams commenced work in 21 projects in 7 countries.
conclusionWith an approach that is innovative in design and scale, we aim to complete baseline mapping of trachoma throughout the world in 2015.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.