Abstract
EPA's National Exposure Research Laboratory (NERL) has combined data from 12 U.S. studies related to human activities into one comprehensive data system that can be accessed via the Internet. The data system is called the Consolidated Human Activity Database (CHAD) and is available at E-mail: http://www.epa.gov/nerl/. CHAD contains 22,968 person days of activity and is designed to assist exposure assessors and modelers in constructing population “cohorts” of people with specified characteristics that are suitable for subsequent analysis or modeling. This paper describes the studies comprising CHAD and the various intellectual foundations that underlay the gathering of human activity pattern data. Next, it provides a brief overview of the Internet version of CHAD, and discusses how the program was formulated. Emphasis is placed on how activity-specific energy expenditure estimates were developed. Finally, the paper recommends steps that should be taken to improve the collection of activity data that would improve energy expenditure estimates and related information needed for physiologically based exposure–dose modeling efforts.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 6 print issues and online access
$259.00 per year
only $43.17 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
Author information
Authors and Affiliations
Corresponding author
Additional information
Disclaimer: The U.S. Environmental Protection Agency, through its Office of Research and Development, funded the development of the research described in this article under contract no. 68-D5-0049 to ManTech Environmental Technology, Inc. It has been subjected to agency review and approved for publication. Mention of trade names or commercial products does not constitute an endorsement or recommendation for use.
Rights and permissions
About this article
Cite this article
MCCURDY, T., GLEN, G., SMITH, L. et al. The National Exposure Research Laboratory's Consolidated Human Activity Database. J Expo Sci Environ Epidemiol 10, 566–578 (2000). https://doi.org/10.1038/sj.jea.7500114
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1038/sj.jea.7500114
Keywords
This article is cited by
-
Traffic related activity pattern of Chinese adults: a nation-wide population based survey
Journal of Exposure Science & Environmental Epidemiology (2023)
-
Microenvironment Tracker (MicroTrac) model to estimate time-location of individuals for air pollution exposure assessments: model evaluation using smartphone data
Journal of Exposure Science & Environmental Epidemiology (2023)
-
Exposure forecasting – ExpoCast – for data-poor chemicals in commerce and the environment
Journal of Exposure Science & Environmental Epidemiology (2022)
-
A sensitivity analysis of a human exposure model using the Sobol method
Stochastic Environmental Research and Risk Assessment (2022)
-
Simulating exposure-related behaviors using agent-based models embedded with needs-based artificial intelligence
Journal of Exposure Science & Environmental Epidemiology (2020)