Time spent in activities, locations, and microenvironments: A California-national comparison
Robinson, JP; Thomas, J
HERO ID
15897
Reference Type
Technical Report
Subtype
EPA Report
Year
1991
Language
English
| HERO ID | 15897 |
|---|---|
| Material Type | EPA Report |
| Year | 1991 |
| Title | Time spent in activities, locations, and microenvironments: A California-national comparison |
| Authors | Robinson, JP; Thomas, J |
| Publisher Text | U.S. Environmental Protection Agency, Environmental Monitoring Systems Laboratory |
| City | Las Vegas, NV |
| Abstract | In the report, the authors review data on the methodological background and results from the 1987-88 California Air Resources Board (CARB) time activity study and from a similar 1985 national study of Americans' Use of Time conducted at the University of Maryland, College Park. In order to facilitate comparisons, data from the study were recorded to be as compared as possible to the CARB code categories. In general, the data on average distributions of time in activities matched up rather well across the two samples. Despite some differences, the two data sets overall showed remarkably similar patterns of activity. That was less true for the locations codes, however. Several sources of discrepancy were found in the comparison of these data. A recording of location data from the national study provided some resolution of the differences that were found, but several differences remained. The strong similarities of the average time for the activity data indicate that the California data could be used to generate a better set of location codings for the national data. A major reason for analyzing time-diary data is to estimate time spent in various microenvironments. Microenvironments refer neither solely to activities nor solely to locations but to the combination of activities and locations that yield potential exposures of which 16 were defined for comparison. The analysis confirms Californians spent more time in transit and in outdoor environments. |
| Report Number | EPA/600/4-91/006 |
| Ntis Number | PB92140789 |
| Url | https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=P100FGXM.txt |
| Is Certified Translation | No |
| Dupe Override | No |
| Number Of Pages | 107 |
| Is Public | Yes |
| Language Text | English |
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