Geospatial Targeting for HIV Programs using Modelbuilder

John SpencerMEASURE EvaluationUniversity of North Carolina at Chapel Hill

June 28, 20162016 ESRI User Conference

Global, five-year, $180M cooperative agreement

Strategic objective:

To strengthen health information systems – the capacity to gather, interpret, and use data – so countries can make better decisions and sustain good health outcomes over time.

What is MEASURE Evaluation?

PEPFAR

Presidential Emergency Plan For AIDS Relief

“We will accelerate efforts to prevent HIV infections and ensure treatment among those who need it most. Our work will be data‐driven from the national level down to the most granular site level to best guide programmatic decision‐making and solidify sustainability and quality.”

PEPFAR 3.0: Controlling the Epidemic: Delivering on the promise of an AIDS‐free generation

“Doing the right thing, in the right place at the right time”

GIS can make it possible to do the right thing in the right place at the right time

USAID funded activity to work with a country to improve geospatial targeting for

PEPFAR HIV Programs

What data do we need to answer these questions?

How do you reach the people in need most effectively and efficiently?

Which site to prioritize?

246810

2 – 10 KM buffers around a facility

23 Km

Difference between Euclidean distance and road network distance

Site Location2 KM Service Area

5 KM Service Area

10 KM Service Area

Population

Service Area Advantages

• Estimate Population in Service Area• Gap Analysis• Over or underperforming sites• Provide a localized picture

Develop Toolkit with ArcGIS Models

• Automated, can be run without advanced GIS skill.• Dialog box driven

Easier said than done

Issues encountered

• Zonal stats issues with overlapping polygons• Long processing time with zonal stats• Data quality

• Road network• Site locations• Population

Lessons learned

• Now that there is a richer data infrastructure, greater opportunity to use GIS to support decision making

• But there are still technical and data challenges to overcome.

• Important to consider the balance between data limitations and value to be gained from GIS analysis

measureevaluation.org/gis

MEASURE Evaluation is funded by the U.S. Agencyfor International Development (USAID) under terms of Cooperative Agreement AID-OAA-L-14-00004 andimplemented by the Carolina Population Center, University of North Carolina at Chapel Hill in partnership with ICFInternational, John Snow, Inc., Management Sciences forHealth, Palladium Group, and Tulane University. The viewsexpressed in this presentation do not necessarily reflectthe views of USAID or the United States government.www.measureevaluation.org