@article{ref1,
title="Comparison of self-reported and expert-observed physical activities at work in a general population",
journal="American journal of industrial medicine",
year="1998",
author="Nordstrom, David L. and Vierkant, R. A. and Layde, Peter M. and Smith, M. J.",
volume="34",
number="1",
pages="29-35",
abstract="Concerns about exposure assessment quality have impeded research to identify risk factors for ergonomic disorders. We compared self-reported and expert-observed estimates of work-related physical factors for participants in a study of carpal tunnel syndrome (CTS). We analyzed data from 61 subjects, including 28 CTS cases and 33 controls randomly samples from a case-control study with 417 participants. For 11 posture and manual materials handling factors, the median difference in mean exposure between self-reported and expert-observed exposure at work was less than 1/2 hour a day. Measurements by the two methods in this study agreed more often than expected by chance (median kappa 0.31 in cases and 0.28 in controls). Kappa differed significantly by case-control status for two factors: bending at the waist (kappa 0.79 in cases versus 0.28 in controls, P = 0.01) and twisting of the forearm (kappa 0.45 in cases versus -0.02 in controls, P = 0.02). Although imperfect, exposure information collected from workers' self-reports is useful for many ergonomic epidemiology studies.<p /><p>Language: en</p>",
language="en",
issn="0271-3586",
doi="",
url="http://dx.doi.org/"
}