|Document ID (ISN)||75449|
|ISSN - Serial title
||0271-3586 - American Journal of Industrial Medicine
|Convention or series no.
||Teschke K., Marion S.A., Ostry A., Hertzmann C., Herschler R., Dimich-Ward H., Kelly S.
||Reliability of retrospective chlorophenol exposure estimates over five decades
||Nov. 1996, Vol.30, No.5, p.616-622. Illus. 25 ref.
||Historical chlorophenate exposures were estimated by teams of sawmill workers. The mill histories were divided into eras when jobs and exposures were relatively stable. Raters with at least 5 years of work experience in an era were asked to estimate the frequency and duration of exposure for each job in the mill. Reliability measures for these estimates were calculated for each of the mills and time period combinations, using the individual intraclass correlation coefficient (ICCind) to assess agreement between raters and the group intraclass correlation coefficient (ICCgroup). ICCind were low, but ICCgroup were considerably higher, indicating that the number of raters used in this study was sufficient to produce stable average estimates of exposure throughout the study period. These data confirm the intuitive expectation that reliability of exposure estimates decreases when reconstruction of conditions in the distant past is required, and therefore that the random component of exposure misclassification is a greater threat to validity in these earlier time periods.
||reliability; sawmilling industry; chlorophenols; exposure evaluation
||subjective assessment; length of exposure; questionnaire survey
||D - Periodical articles
|Country / State or Province||Canada|
||Toxic and dangerous substances
|Broad subject area(s)
Lumber and the woodworking industry
Phenols and phenolic compounds