TY - JOUR
T1 - The Global Trachoma Mapping Project
T2 - Methodology of a 34-Country Population-Based Study
AU - Solomon, Anthony W.
AU - Pavluck, Alexandre L.
AU - Courtright, Paul
AU - Aboe, Agatha
AU - Adamu, Liknaw
AU - Alemayehu, Wondu
AU - Alemu, Menbere
AU - Alexander, Neal D.E.
AU - Kello, Amir Bedri
AU - Bero, Berhanu
AU - Brooker, Simon J.
AU - Chu, Brian K.
AU - Dejene, Michael
AU - Emerson, Paul M.
AU - Flueckiger, Rebecca M.
AU - Gadisa, Solomon
AU - Gass, Katherine
AU - Gebre, Teshome
AU - Habtamu, Zelalem
AU - Harvey, Erik
AU - Haslam, Dominic
AU - King, Jonathan D.
AU - Mesurier, Richard Le
AU - Lewallen, Susan
AU - Lietman, Thomas M.
AU - Macarthur, Chad
AU - Mariotti, Silvio P.
AU - Massey, Anna
AU - Mathieu, Els
AU - Mekasha, Addis
AU - Millar, Tom
AU - Mpyet, Caleb
AU - Muñoz, Beatriz E.
AU - Ngondi, Jeremiah
AU - Ogden, Stephanie
AU - Pearce, Joseph
AU - Sarah, Virginia
AU - Sisay, Alemayehu
AU - Smith, Jennifer L.
AU - Taylor, Hugh R.
AU - Thomson, Jo
AU - West, Sheila K.
AU - Willis, Rebecca
AU - Bush, Simon
AU - Haddad, Danny
AU - Foster, Allen
N1 - Funding Information:
The GTMP is funded by grant from the United Kingdom’s Department for International Development (DFID)(ARIES: 203145) to Sightsavers, who is leading a consortium of non-governmental organizations and academic institutions to complete the work described. Additional funding for fieldwork is provided by the United States Agency for International Development through its END in Asia grant to FHI 360; and its ENVISION grant to Sightsavers. The Committee established in March 2012 to examine issues surrounding completion of global trachoma mapping was initially supported by the International Trachoma Initiative, who receive funding from Pfizer. AWS was a Wellcome Trust Intermediate Clinical Fellow (098521) and SJB a Wellcome Trust Senior Research Fellow (098045) at
Publisher Copyright:
© Informa Healthcare USA, Inc.
PY - 2015/6/1
Y1 - 2015/6/1
N2 - Purpose: To complete the baseline trachoma map worldwide by conducting population-based surveys in an estimated 1238 suspected endemic districts of 34 countries. Methods: A 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. Results: In the first year of fieldwork, 347 field teams commenced work in 21 projects in 7 countries. Conclusion: With an approach that is innovative in design and scale, we aim to complete baseline mapping of trachoma throughout the world in 2015.
AB - Purpose: To complete the baseline trachoma map worldwide by conducting population-based surveys in an estimated 1238 suspected endemic districts of 34 countries. Methods: A 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. Results: In the first year of fieldwork, 347 field teams commenced work in 21 projects in 7 countries. Conclusion: With an approach that is innovative in design and scale, we aim to complete baseline mapping of trachoma throughout the world in 2015.
KW - Blindness
KW - MHealth
KW - Prevalence study
KW - Trachoma
KW - Trichiasis
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UR - http://www.scopus.com/inward/citedby.url?scp=84936951972&partnerID=8YFLogxK
U2 - 10.3109/09286586.2015.1037401
DO - 10.3109/09286586.2015.1037401
M3 - Article
C2 - 26158580
AN - SCOPUS:84936951972
SN - 0928-6586
VL - 22
SP - 214
EP - 225
JO - Ophthalmic Epidemiology
JF - Ophthalmic Epidemiology
IS - 3
ER -