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Validity assessment of self-reported construction tasks.

Authors
Hunting-K
Source
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Grant Number R01-OH-03266, 1997 Mar; :1-35
Link
NIOSHTIC No.
00238189
Abstract
An observational study was conducted among sheet metal workers to evaluate the validity of self reported exposures to construction work tasks. Subjects included 49 shop workers and 52 construction site sheet metal workers. Tasks were divided into major (1 hour or more) and minor (less than 1 hour). Workers were observed for about 25% of the work day, for 3 days. Subjects completed a questionnaire each day indicating tasks done, time spent on each, the size of materials for each task, and the number of times each power tool was used. Worker estimates were compared with observations. Sheet metal workers in the shop tended to specialize in particular tasks, while construction workers showed greater day to day variability. The authors conclude that workers tended to overestimate the amount of time spent at major tasks, and to underestimate the amount of time spent at shorter duration tasks. The primary sources of the errors for the workers were a definition of the tasks, and remembering how the day was spent. For the observer the primary sources of error were in the definition of the tasks, and sampling error from observing each worker for only about one quarter of the day.
Keywords
NIOSH-Grant; Musculoskeletal-system-disorders; Data-processing; Ergonomics; Human-factors-engineering; Metalworking-industry; Construction-workers; Task-performance
Contact
Medicine George Washington University 2300 K St NW RM 201 Washington, DC 20037
Publication Date
19970303
Document Type
Final Grant Report
Funding Amount
114448
Funding Type
Grant
Fiscal Year
1997
NTIS Accession No.
PB97-207187
NTIS Price
A04
Identifying No.
Grant-Number-R01-OH-03266
NIOSH Division
OEP
Source Name
National Institute for Occupational Safety and Health
State
WA; DC
Performing Organization
George Washington University, Washington, Dist of Col
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