219913 Adolescent sexual health outcomes and program evaluation using geographical information systems (GIS)

Tuesday, November 9, 2010 : 12:50 PM - 1:05 PM

Sheetal Malhotra, MBBS, MS , Public Health Programs, Medical Institute for Sexual Health, Austin, TX
Nancy C. Ronquillo , El Paso City Department of Public Health, El Paso, TX
Katherine Hendricks, MD, MPH&TM , Public Health, Texas Department of Criminal Justice, Huntsville, TX
Interventions for adolescent sexual health are rarely evaluated using outcome maps for sexually transmitted infections (STIs) and teen births. Using geographical information system (GIS) allows easy visualization of occurrence and trends in these outcomes. Objective: To 1) describe GIS mapping of sexual heath outcomes such as STIs and teen births and 2) demonstrate GIS maps from an adolescent sex education program. Methods: Data on chlamydia infections and teen births are obtained for the program and nonprogram areas in a Texas border County. Concurrently, boundary files for circumscribed intervention and nonintervention areas are procured. Using GIS, these data are then geocoded and placed on a map. Rates are calculated for the purpose of comparison. Comparison of case incidence and rates in program and nonprogram areas over time identifies changes and trends in sexual health outcomes. Results: Maps from an adolescent sexual health education program in school districts in a Texas County will be demonstrated. GIS maps from our program are used to compare sexual health outcomes geographically (between County school districts) as well as temporally (years). The maps show decreases in teen births and chlamydia in the program areas as compared to non-program areas over time. Further analyses using GIS, such as spatial analyses, will also be discussed. Various challenges to the use of GIS include ensuring data integrity, address matching, and collection of updated geographical information of program and comparison areas. Conclusion: Use of GIS for sexual health outcome data is an effective strategy for program evaluation.

Learning Areas:
Conduct evaluation related to programs, research, and other areas of practice
Program planning

Learning Objectives:
1. Describe the use of Geographical Information System (GIS) mapping for outcomes such as sexually transmitted infections and teen births 2. Discuss evaluation of an adolescent sexual health education program using GIS

Keywords: Geographic Information Systems, Adolescent Health

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: I am the Principal Investigator and Evaluator for this program
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.