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Tropical Data

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  • Glossary
  • General Information
    • What is Tropical Data (video presentation)
    • Tropical Data Information Leaflet
    • Tropical Data Principles
    • Tropical Data Survey Process
    • Photography (media) consent form
  • Project planning tools & protocols
    • Protocol writing guide
    • Writing trachoma survey protocols (video presentation)
    • Activity planning template
    • Planning Checklist
    • Operational research (OR) planning checklist
    • Budget planning template
    • Visa letter template
  • Training materials
    • Training System for Trachoma (video)
    • Training system for trachoma prevalence surveys
    • Training system for TT-only surveys
    • Annex 11 - Survey Forms (V4)
    • Training feedback survey
  • Data management & dissemination
    • Data Management Website
      • How to Download and Access Data
      • Demo project - Expanded trichiasis and district reports
      • User Roles
      • User Manager guide
    • Publications & Data Dissemination
      • Online Publications Writing Workshop
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    • Data FAQs
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      • In memoriam
        • In memory of our Tropical Data Colleagues
    • Geostatistical approaches
      • Introduction to Geostatistics and Tropical Data
      • Introductory webinar to geostatistical approaches
      • Geostatistics webinar feedback survey links
      • Geostatistics FAQs
        • General FAQs
          • What is model-based geostatistics (MBG)?
          • How is MBG different from the current method for estimating trachoma prevalence?
          • What is the Probability of being Below Threshold (PBT)?
          • How will the PBT threshold be decided?
          • Does MBG replace the need for surveys?
          • Do more or fewer clusters need to be visited when using the MBG approach for survey design?
          • How has MBG been used so far within the context of trachoma elimination?
          • What is required in order to run MBG?
          • Can MBG be used to estimate prevalence in inaccessible EUs?
          • Can MBG be used when there is large population movement?
          • Can MBG be used for islands in an archipelago community?
          • Is it possible to use MBG for an entire country?
          • Where is the funding coming from to support the research and the Tropical Data development?
          • Is there any support available for health ministries interested in implementing MBG?
          • When will we have official confirmation from WHO/Tropical Data to use MBG?
          • Who owns the MBG output?
          • How do we decide between two different outputs, one from the standard analysis and one from MBG?
        • Technical FAQs
          • How does MBG work in the context of trachoma elimination?
          • Who chooses the covariates to be included in the model?
          • Where are the covariate data sourced from?
          • Is it possible to "borrow" data from a long distance away, or does MBG work better when districts are contiguous?
          • Can data over 5 years old be used?
          • Has ground-truthing been done already or is there a plan to do it to validate the outcome of MBG?
          • Is it possible to run MBG when there is very little trachoma, i.e. minimal TT?
      • Glossary of terms
      • Publications (geostatistical)
        • Geostatistical related publications
      • Technical Consultation summary, Lancaster, March 2024
    • Serology & Infection testing
      • Introduction to serology and infection data collection
      • Serology and infection testing articles
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    • Geostatistical approaches

    Geostatistics FAQs

    General FAQs

    Technical FAQs