Community Health Maps

Noise Pollution and Health in the Urban Environment: A Pilot Project

In October 2013, the Seattle Indian Health Board’s (SIHB’s) Urban Indian Health Institute (UIHI) completed a noise pollution pilot study. The goals of this project were: 1) to evaluate the feasibility of community data collection and analysis via a low cost GPS/GIS workflow, and 2) to offer recommendations on the feasibility and next steps for scalability to the larger Urban Indian Health Organization (UIHO) network. The collected data could additionally illustrate community health needs when merged with health or other contextual data for analysis, but these analyses were not the primary focus of this pilot. We chose to look at noise pollution because it is an environmental health concern that has been linked to a variety of health conditions in both occupational and community studies and it is easy to measure with portable devices.

For field data collection, we used an iPad Mini with the GISPro and Decibel 10th apps. For mapping and spatial analysis, we used the open source desktop GIS software QGIS ( While GISPro is a paid iPad app, the other programs are free. Data collection participants were staff recruited from the SIHB’s administrative, clinical and UIHI departments. We selected participants from this pool because they are representative of the staff at UIHOs who likely have limited experience with data collection and GIS. UIHI project staff trained seven participants in the iPad workflow and data collection process. This workflow consisted of five steps: 1) collect noise data with Decibel 10th, 2) export noise data via email, 3) take a site picture, 4) collect GIS data with GISPro and 5) export that GIS data.

Select pictures of data collection sites, taken by study participants using an iPad Mini; Seattle, WA

When the volunteer participants were finished with data collection, project staff compiled and analyzed the data using QGIS and Stata. Data were merged with socioeconomic indicators from the American Community Survey by zip code. Participating staff were asked for their feedback about their experience and the usability of the tools.

Average decibel reading at the 17 data collection sites and per capita income of zip codes, location of the Seattle Indian Health Board indicated by yellow star; Seattle, WA; October 2013

That feedback, combined with the experience of project staff, suggested that the GIS software tools were user-friendly and highly effective. Thus, they are likely to be attractive to organizations with limited technology budgets. However, some of the other resources necessary for this project (i.e. the GISPro mapping app, the iPad and general GIS software expertise) are expensive and may be limitations for many UIHOs. In the future, the UIHI would like to use these tools to better understand the health of the community, as well as assist UIHOs in conducting similar projects in their service area.

For more information about this project, view the project brief at

The UIHI is a division of the SIHB and is one of 12 Indian Health Service tribal epidemiology centers (TECs). Unlike the other TECs that focus on geography-specific tribal populations, the UIHI is national in scope, focusing on American Indians and Alaska Natives (AI/ANs) living in urban areas. The UIHI supports the efforts of Urban Indian Health Organizations (UIHOs) nationally, as they serve the health and social support needs of their urban AI/AN communities.

The Center for Public Service Communications and the National Library of Medicine provided funding for the UIHI to complete this project.