TY - JOUR AU - Solomon A AU - Pavluck A AU - Courtright P AU - Aboe A AU - Adamu L AU - Alemayehu W AU - Alemu M AU - Alexander N AU - Kello AB AU - Bero B AU - Brooker S AU - Chu BK AU - Dejene M AU - Emerson P AU - Flueckiger R AU - Gadisa S AU - Gass KM AU - Gebre T AU - Habtamu Z AU - Harvey E AU - Haslam D AU - King J AU - Mesurier RL AU - Lewallen S AU - Lietman TM AU - Macarthur C AU - Mariotti SP AU - Massey A AU - Mathieu E AU - Mekasha A AU - Millar T AU - Mpyet C AU - Munoz B AU - Ngondi J AU - Ogden S AU - Pearce J AU - Sarah V AU - Sisay A AU - Smith JL AU - Taylor H AU - Thomson J AU - West S AU - Willis R AU - Bush S AU - Haddad D AU - Foster A 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.

BT - Ophthalmic epidemiology C1 -

http://www.ncbi.nlm.nih.gov/pubmed/26158580?dopt=Abstract

DO - 10.3109/09286586.2015.1037401 IS - 3 J2 - Ophthalmic Epidemiol LA - eng 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.

PY - 2015 SP - 214 EP - 25 T2 - Ophthalmic epidemiology TI - The global trachoma mapping project: Methodology of a 34-country population-based study. UR - http://www.tandfonline.com/doi/full/10.3109/09286586.2015.1037401 VL - 22 SN - 1744-5086 ER -