Assessment of physical work load in epidemiologic studies : common measurement metrics for exposure assessment

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      <subfield code="a">Assessment of physical work load in epidemiologic studies</subfield>
      <subfield code="b">: common measurement metrics for exposure assessment</subfield>
      <subfield code="c">R. Wells... [et al.]</subfield>
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      <subfield code="a">There are many possible means of determining exposure ranging from self-reports of physical exposure to measures of muscle activations and estimated spinal loads. In epidemiologic studies, issues of validity make instrumented measures preferable, however issues of cost and practicability tend to force investigators to less costly but less valid and less reliable measures of exposure, such as self-report questionnaires. This paper presents a method by which estimates of exposure from self-report questionnaires, expert observers, work sampling, video analysis and electromyograms can be reported in a common metric</subfield>
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      <subfield code="g">Vol. 40, nº 1, January 1997 ; p. 51-61</subfield>
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