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CEHTP provides data analysis and linkage services
The California Environmental Health Tracking Program (CEHTP) makes environmental and health data accessible, usable, and understandable for a variety of users, including community members, policy-makers, advocacy organizations, and researchers. We provide a variety of online data resources related to air quality, asthma, drinking water, heart attacks, birth defects, childhood lead poisoning, and other environmental health topics. Users can also make custom requests for data not currently available via our online data queries and web tools.
As part of our services, CEHTP can conduct custom analyses of environmental and health data, including calculation of rates using advanced spatial statistics. Users can also request displays of data in maps, tables, and charts.
CEHTP also conducts "record-level spatial linkage" with data related to environmental hazards, such as traffic and agricultural pesticide data. This means that we use geographic location to link any dataset that contains a geographic component (such as addresses) with hazard datasets (such as those from CalTrans or the Department of Pesticide Regulation) to calculate a variety of hazard metrics for each record. The user can define a number of linkage parameters, including the area to be analyzed around each location.
CalEnviroScreen uses CEHTP data
CalEnviroScreen, developed by Cal/EPA and its Office of Environmental Health Hazard Assessment (OEHHA), is the nation's first comprehensive statewide environmental health screening tool. The tool identifies "communities most burdened by pollution from multiple sources and most vulnerable to its effects."
CEHTP conducted custom analyses for OEHHA, providing zip code-level data for the CalEnviroScreen asthma and traffic indicators (see figure below). We also also developing spatially-modeled heart attack and birth outcome data by census tract, which may be included in the next version of the screening tool.
Los Angeles Area: Traffic Density by Zip Code
Map prepared by OEHHA using data provided by CEHTP
Other examples of data requests
CEHTP data services have also been used by other organizations to:
- Assess the effectiveness of heat alerts using heat-related hospitalization and emergency department data
- Study the relationship between agricultural pesticides and birth defects
- Study the relationship between traffic pollution and asthma
For more information
CEHTP provides data services on a case-by-case basis dependent on staff availability. Fees may be applied to some services. Please contact us for more information or to make a request.
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