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The lack of an E-R association in the total cohort was thought to be caused by the surface worker cohort somehow obscuring the association.
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Mr. James, a former bus driver, narrowly defeated the New Directions candidate, largely through the support of bus drivers and surface workers.
"The minimum wage sounds nice on the surface: workers earning $8 per hour would certainly be better off if they were earning $12 per hour instead," reads the video's descriptive blurb.
From the 1840s onwards more mines provided crude shelters to protect surface workers from the worst of the weather, but at many others work at surface-level took place in the open air.
The colliery became known as the Bradford Colliery Company, and by 1896 employed 404 underground and 125 surface workers producing house coal and coal for manufacturing from the Parker mine.
Underground miners and surface workers were included.
Underground workers had a significantly higher risk of LBP than surface workers (OR1.4, 95% 1.2-1.8 1.2-1.8
There were 1051 underground workers (68.4%) and 486 surface workers (31.6%).
The E-R trend among surface workers is inconsistent and implausible.
The prevalence of back disorder among underground workers was higher than among surface workers (67.2% vs 59.4%, P < 0.001).
The surface workers' E-R pattern shows much higher HRs and steeper E-R slopes than for the UG workers despite the much lower exposures of the surface workers.
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CEO of Professional Science Editing for Scientists @ prosciediting.com