Bedoukian   RussellIPM   RussellIPM   Piezoelectric Micro-Sprayer


Home
Animal Taxa
Plant Taxa
Semiochemicals
Floral Compounds
Semiochemical Detail
Semiochemicals & Taxa
Synthesis
Control
Invasive spp.
References

Abstract

Guide

Alphascents
Pherobio
InsectScience
E-Econex
Counterpart-Semiochemicals
Print
Email to a Friend
Kindly Donate for The Pherobase

« Previous AbstractGlycosidically-Bound Volatile Phenols Linked to Smoke Taint: Stability during Fermentation with Different Yeasts and in Finished Wine    Next AbstractFemale odors evoke ultrasounds from male mice »

J Expo Anal Environ Epidemiol


Title:Cost/variance optimization for human exposure assessment studies
Author(s):Whitmore RW; Pellizzari ED; Zelon HS; Michael LC; Quackenboss JJ;
Address:"Research Triangle Institute, PO Box 12194, Research Triangle Park, North Carolina, USA. rww@rti.org"
Journal Title:J Expo Anal Environ Epidemiol
Year:2005
Volume:15
Issue:6
Page Number:464 - 472
DOI: 10.1038/sj.jea.7500424
ISSN/ISBN:1053-4245 (Print) 1053-4245 (Linking)
Abstract:"The National Human Exposure Assessment Survey (NHEXAS) field study in EPA Region V (one of three NHEXAS field studies) provides extensive exposure data on a representative sample of 249 residents of the Great Lakes states. Concentration data were obtained for both metals and volatile organic compounds (VOCs) from multiple environmental media and from human biomarkers. A variance model for the logarithms of concentration measurements is used to define intraclass correlations between observations within primary sampling units (PSUs) (nominally counties) and within secondary sampling units (SSUs) (nominally Census blocks). A model for the total cost of the study is developed in terms of fixed costs and variable costs per PSU, SSU, and participant. Intraclass correlations are estimated for media and analytes with sufficient sample sizes. We demonstrate how the intraclass correlations and variable cost components can be used to determine the sample allocation that minimizes cost while achieving pre-specified precision constraints for future studies that monitor environmental concentrations and human exposures for metals and VOCs"
Keywords:"Biomarkers Dust *Environmental Exposure Humans Metals/toxicity Models, Theoretical Organic Chemicals/toxicity Volatilization;"
Notes:"MedlineWhitmore, Roy W Pellizzari, Edo D Zelon, Harvey S Michael, Larry C Quackenboss, James J eng Research Support, U.S. Gov't, Non-P.H.S. England 2005/05/12 J Expo Anal Environ Epidemiol. 2005 Nov; 15(6):464-72. doi: 10.1038/sj.jea.7500424"

 
Back to top
 
Citation: El-Sayed AM 2024. The Pherobase: Database of Pheromones and Semiochemicals. <http://www.pherobase.com>.
© 2003-2024 The Pherobase - Extensive Database of Pheromones and Semiochemicals. Ashraf M. El-Sayed.
Page created on 22-11-2024