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Occupational Cohort Time Scales

PURPOSE: This study explores how highly correlated time variables (occupational cohort time scales) contribute to confounding and ambiguity of interpretation. METHODS: Occupational cohort time scales were identified and organized through simple equations of three time scales (relational triads) and...

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Autores principales: Deubner, David C., Roth, H. Daniel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American College of Occupational and Environmental Medicine 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4448669/
https://www.ncbi.nlm.nih.gov/pubmed/25647318
http://dx.doi.org/10.1097/JOM.0000000000000412
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author Deubner, David C.
Roth, H. Daniel
author_facet Deubner, David C.
Roth, H. Daniel
author_sort Deubner, David C.
collection PubMed
description PURPOSE: This study explores how highly correlated time variables (occupational cohort time scales) contribute to confounding and ambiguity of interpretation. METHODS: Occupational cohort time scales were identified and organized through simple equations of three time scales (relational triads) and the connections between these triads (time scale web). The behavior of the time scales was examined when constraints were imposed on variable ranges and interrelationships. RESULTS: Constraints on a time scale in a triad create high correlations between the other two time scales. These correlations combine with the connections between relational triads to produce association paths. High correlation between time scales leads to ambiguity of interpretation. CONCLUSIONS: Understanding the properties of occupational cohort time scales, their relational triads, and the time scale web is helpful in understanding the origins of otherwise obscure confounding bias and ambiguity of interpretation.
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spelling pubmed-44486692015-06-17 Occupational Cohort Time Scales Deubner, David C. Roth, H. Daniel J Occup Environ Med Original Articles PURPOSE: This study explores how highly correlated time variables (occupational cohort time scales) contribute to confounding and ambiguity of interpretation. METHODS: Occupational cohort time scales were identified and organized through simple equations of three time scales (relational triads) and the connections between these triads (time scale web). The behavior of the time scales was examined when constraints were imposed on variable ranges and interrelationships. RESULTS: Constraints on a time scale in a triad create high correlations between the other two time scales. These correlations combine with the connections between relational triads to produce association paths. High correlation between time scales leads to ambiguity of interpretation. CONCLUSIONS: Understanding the properties of occupational cohort time scales, their relational triads, and the time scale web is helpful in understanding the origins of otherwise obscure confounding bias and ambiguity of interpretation. American College of Occupational and Environmental Medicine 2015-06 2015-08-18 /pmc/articles/PMC4448669/ /pubmed/25647318 http://dx.doi.org/10.1097/JOM.0000000000000412 Text en © 2015 by American College of Occupational and Environmental Medicine This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License, where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially.
spellingShingle Original Articles
Deubner, David C.
Roth, H. Daniel
Occupational Cohort Time Scales
title Occupational Cohort Time Scales
title_full Occupational Cohort Time Scales
title_fullStr Occupational Cohort Time Scales
title_full_unstemmed Occupational Cohort Time Scales
title_short Occupational Cohort Time Scales
title_sort occupational cohort time scales
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4448669/
https://www.ncbi.nlm.nih.gov/pubmed/25647318
http://dx.doi.org/10.1097/JOM.0000000000000412
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