HAP Project

CARB California Activity Pattern Surveys (CAPS)

Description: 

The California Air Resources Board (CARB) sponsored two activity patterns surveys in the late 1980's and early 1990's. One study was a California survey of adults and youth (n = 1742), and the other was a California survey of children (n=1200). Both these surveys measured minute-by-minute activity diaries over a 24-hour period using a computerized telephone instrument.

Format: 

The CAPS data are available in R format as part of the heR.ActivityData module.
Two reports in PDF format are available from the CARB website.

Release Date: 

1990

License: 

Free for research and personal use.

Project Name: 

Research Topic: 

Human Activity Patterns

Aims: 

This project aims to characterize and encapsulate human activity patterns through statistical analysis of empirical data and deterministic simulation. A main goal is to achieve an understanding and mathematical description of human activities that can be used in human exposure simulation.

Investigators: 

Neil E. Klepeis
Wayne R. Ott
Paul Switzer
John Robinson
Andy M. Tsang

Home Page: 

National Human Activity Pattern Survey (NHAPS)

Description: 

NHAPS is a representative US human activity pattern survey of potential exposure of Americans to household air and water pollutants (n = 9,386). The complete data are available, including codebooks and questionnaires. A journal article has been published describing the survey and some results

Format: 

The NHAPS data are available from several sources.
The EPA makes the NHAPS data available through their CHAD application,
University of Maryland makes the NHAPS data available in ASCII format, as well as supplying an online codebook.
Dr. Klepeis has created an R Package that conveniently contains the NHAPS data, along with questionnaires and codebooks.

Release Date: 

1996

License: 

General Public License (GPL).

Project Name: 

Research Topic: 

Analysis of the National Human Activity Pattern (NHAPS) Respondents from a Standpoint of Exposure Assessment

Document Type: 

Technical Report

Description: 

USEPA report containing a first analysis of data from the 1992-94 National Human Activity Pattern Survey (NHAPS)

Project Name: 

Key Words: 

Research Topic: 

Descriptive Statistics Tables from a Detailed Analysis of the National Human Activity Pattern Survey (NHAPS) Data

Document Type: 

Technical Report

Description: 

USEPA report containing many descriptive statistics tables based on the diary and main data from the 1992-94 National Human Activity Pattern Survey (NHAPS).

Project Name: 

Key Words: 

Research Topic: 

The National Human Activity Pattern Survey (NHAPS): A Resource for Assessing Exposure to Environmental Pollutants

Document Type: 

Journal Article

Description: 

Article on the national human activity pattern survey (NHAPS), which interviewed 9,386 Americans by telephone on their potential exposure to household air and water contaminants

Project Name: 

Key Words: 

Research Topic: 

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