Human Activity Patterns
CARB California Activity Pattern Surveys (CAPS)
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.
USEPA Consolidated Human Activity Database (CHAD)
CHAD is a database that includes many useful activity pattern data sets, and can be downloaded from the USEPA website. It includes the National Human Activity Pattern Survey (NHAPS) data.
From the website: " [The] Consolidated Human Activity Database (CHAD) contains data obtained from pre-existing human activity studies that were collected at city, state, and national levels. CHAD is intended to be an input file for exposure/intake dose modeling and/or statistical analysis. CHAD is a master database providing access to other human activity databases using a consistent format. This facilitates access and retrieval of activity/and questionnaire information from those databases that EPA currently has access to and uses in its various regulatory analyses ...."
Human Activity Pattern Project
Please visit the HAP Summary Page for a quick description of the aims, investigators, and materials associated with the Human Activity Patterns (HAP) hosted project.
National Human Activity Pattern Survey (NHAPS)
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
University of Maryland Time Use Data
The University of Maryland has performed many time-use studies since the 1960's. The website contains links to interactive analyses of the data and users can also download raw data.
Multinational Time Use Study (MTUS)
The University of Maryland has performed many time-use studies since the 1960's. The website contains links to interactive analyses of the data and users can also download raw data.
Analysis of the National Human Activity Pattern (NHAPS) Respondents from a Standpoint of Exposure Assessment
USEPA report containing a first analysis of data from the 1992-94 National Human Activity Pattern Survey (NHAPS)
Descriptive Statistics Tables from a Detailed Analysis of the National Human Activity Pattern Survey (NHAPS) Data
USEPA report containing many descriptive statistics tables based on the diary and main data from the 1992-94 National Human Activity Pattern Survey (NHAPS).
The National Human Activity Pattern Survey (NHAPS): A Resource for Assessing Exposure to Environmental Pollutants
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
