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Evaluation and comparison of three exposure assessment techniques.

Authors
Neitzel-RL; Daniell-WE; Sheppard-L; Davies-HW; Seixas-NS
Source
J Occup Environ Hyg 2011 May; 8(5):310-323
NIOSHTIC No.
20038598
Abstract
This study was conducted to verify the performance of a recently developed subjective rating (SR) exposure assessment technique and to compare estimates made using this and two other techniques (trade mean, or TM, and task-based, or TB, approaches) to measured exposures. Subjects (n = 68) each completed three full-shift noise measurements over 4 months. Individual measured mean exposures were created by averaging each subject's repeated measurements, and TM, TB, and SR estimates were created using noise levels from worksites external to the current study. The bias, precision, accuracy, and absolute agreement of estimates created using the three techniques were evaluated by comparing estimated exposures with measured exposures. Trade mean estimates showed little bias, while neither the TM nor the SR techniques produced unbiased estimates, and the SR estimates showed the greatest bias of the three techniques. Accuracy was essentially equivalent among the three techniques. All three techniques showed poor agreement with measured exposures and were not highly correlated with each other. Estimates from the SR technique generally performed similarly to the TM and TB techniques. Methods to incorporate information from each technique into exposure estimates should be explored.
Keywords
Exposure-assessment; Exposure-levels; Measurement-equipment; Noise-measurement; Noise-levels; Analytical-models; Mathematical-models; Models; Noise; Author Keywords: exposure; noise; subjective rating; task-based assessment
Contact
Richard Neitzel, University of Washington, Department of Environmental and Occupational Health Sciences, Box 354695, Seattle WA 98185-4695
CODEN
JOEHA2
Publication Date
20110501
Document Type
Journal Article
Email Address
rneitzel@u.washington.edu
Funding Type
Grant
Fiscal Year
2011
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-003912
Issue of Publication
5
ISSN
1545-9624
Source Name
Journal of Occupational and Environmental Hygiene
State
WA
Performing Organization
University of Washington
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