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- W1929201630 abstract "<strong><span style=font-family: TimesNewRomanPS-BoldMT;><span style=font-family: TimesNewRomanPS-BoldMT;><p align=left> </p></span></span><span style=font-size: x-small; font-family: TimesNewRomanPS-BoldMT;><span style=font-size: x-small; font-family: TimesNewRomanPS-BoldMT;>ABSTRACT</span></span></strong><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><p align=left>Results are described from exposure assessments in two epidemiological studies of farmers and tunnel</p><p align=left>workers. The inter and intra worker variances of exposure were used as a basis for classification of</p><p align=left>workers in groups exposed to different levels.</p><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><p align=left>The between worker variability of exposure to</p></span></span></span><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><p align=left> </p></span></span><p align=left><span style=font-size: x-small; font-family: Symbol;><span style=font-size: x-small; font-family: Symbol;>α</span></span><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><span style=font-size: x-small; font-family: TimesNewRomanPSMT;>-quartz showed that tunnel workers were exposed<span style=font-size: x-small; font-family: TimesNewRomanPSMT;><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><p align=left>to different levels (GSD</p></span></span></span><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><p align=left> </p></span></span></p><p align=left><span style=font-size: xx-small; font-family: TimesNewRomanPSMT;><span style=font-size: xx-small; font-family: TimesNewRomanPSMT;>B </span></span><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><span style=font-size: x-small; font-family: TimesNewRomanPSMT;>= 2.7). Classification by job type showed only 39% higher exposure of concrete<span style=font-size: x-small; font-family: TimesNewRomanPSMT;><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><p align=left>workers compared to excavation workers. The influence of tasks on exposure to</p></span></span></span><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><p align=left> </p></span></span></p><p align=left><span style=font-size: x-small; font-family: Symbol;><span style=font-size: x-small; font-family: Symbol;>α</span></span><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><span style=font-size: x-small; font-family: TimesNewRomanPSMT;>-quartz among<span style=font-size: x-small; font-family: TimesNewRomanPSMT;><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><p align=left>concrete workers was studied further because the between worker variability was large (GSD</p></span></span></span><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><p align=left> </p></span></span></p><p align=left><span style=font-size: xx-small; font-family: TimesNewRomanPSMT;><span style=font-size: xx-small; font-family: TimesNewRomanPSMT;>B </span></span><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><span style=font-size: x-small; font-family: TimesNewRomanPSMT;>= 4.3).<span style=font-size: x-small; font-family: TimesNewRomanPSMT;><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><p align=left>Multiple regression of tasks on</p></span></span></span><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><p align=left> </p></span></span></p><p align=left><span style=font-size: x-small; font-family: Symbol;><span style=font-size: x-small; font-family: Symbol;>α</span></span><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><span style=font-size: x-small; font-family: TimesNewRomanPSMT;>-quartz exposure identified two tasks that explained 51% of the total<span style=font-size: x-small; font-family: TimesNewRomanPSMT;><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><p align=left>variance (R</p></span></span></span><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><p align=left> </p></span></span></p><p align=left><span style=font-size: xx-small; font-family: TimesNewRomanPSMT;><span style=font-size: xx-small; font-family: TimesNewRomanPSMT;>2<span style=font-size: xx-small; font-family: TimesNewRomanPSMT;><span style=font-size: xx-small; font-family: TimesNewRomanPSMT;><p align=left>adj</p></span></span></span><span style=font-size: xx-small; font-family: TimesNewRomanPSMT;><p align=left> </p></span></span></p><p align=left><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><span style=font-size: x-small; font-family: TimesNewRomanPSMT;>). Further classification of concrete workers will depend on identification of workers that<p align=left>use different time on these tasks.</p><p align=left>As farmers carry out few exposed tasks per day, exposure for each task was measured separately.</p><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><p align=left>The between worker variability of exposure to fungal spores among farmers was high (GSD</p></span></span></span><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><p align=left> </p></span></span></p><p align=left><span style=font-size: xx-small; font-family: TimesNewRomanPSMT;><span style=font-size: xx-small; font-family: TimesNewRomanPSMT;>B </span></span><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><span style=font-size: x-small; font-family: TimesNewRomanPSMT;>= 4.4).<p align=left>Classification of measurements into two broad task categories related to plant and livestock production</p><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><p align=left>showed that the tasks within each category were relative homogeneously exposed (GSD</p></span></span></span><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><p align=left> </p></span></span></p><p align=left><span style=font-size: xx-small; font-family: TimesNewRomanPSMT;><span style=font-size: xx-small; font-family: TimesNewRomanPSMT;>B </span></span><span style=font-size: x-small; font-family: TimesNewRomanPSMT;><span style=font-size: x-small; font-family: TimesNewRomanPSMT;>= 1.1 and 1.4)<p align=left>and with geometric mean exposures that differed by a factor of 20. It therefore seems likely that</p><p align=left>farmers can be divided in groups with different cumulative exposure.</p><p align=left>These preliminary results indicate that task-based exposure assessment may improve classification</p><p>of workers by exposure.</p></span></span></p>" @default.
- W1929201630 created "2016-06-24" @default.
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- W1929201630 date "2009-10-29" @default.
- W1929201630 modified "2023-10-17" @default.
- W1929201630 title "Experiences with task-based exposure assessment in studies of farmers and tunnel workers" @default.
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- W1929201630 doi "https://doi.org/10.5324/nje.v9i1.445" @default.
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