Construction of a Job Exposure Matrix to Dust, Fluoride, and Polycyclic Aromatic Hydrocarbons in the Norwegian Aluminum Industry using Prediction Models.
Background: The Norwegian aluminum industry developed and implemented a protocol for prospective monitoring of employees' exposure using personal samplers. We analyzed these data to develop prediction lines to construct a job exposure matrix ( JEM) for the period 1986-1995. Methods: The protocol for...
| Publicado en: | Annals of Occupational Hygiene Vol. 59; no. 9; pp. 1106 - 1122 |
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| Autores principales: | , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Oxford University Press / USA
Nov2015
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=121669248&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 121669248 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00034878 JQ4 jtl: Annals of Occupational Hygiene issn: 00034878 maglogo: N pubinfo: dt: Nov2015 vid: 59 iid: 9 pid: 622 pub: Oxford University Press / USA artinfo: ui: 121669248 121669248 121669248 10.1093/annhyg/mev069 121669248 ppf: 1106 ppct: 16 formats: fmt: @attributes: type: P tig: atl: Construction of a Job Exposure Matrix to Dust, Fluoride, and Polycyclic Aromatic Hydrocarbons in the Norwegian Aluminum Industry using Prediction Models. aug: au: Søyseth, Vidar Henneberger, Paul Virji, Mohammed Abbas Bakke, Berit Kongerud, Johny affil: Medical Division, Akershus University Hospital, Lørenskog 1478, Norway sug: subj: Aluminum Manufacturing Industry Dust Fluorides Polycyclic Hydrocarbons, Aromatic Inhalation Exposure Analysis Occupational Exposure Analysis Human Norway Linear Regression Multimethod Studies Relative Risk Paired T-Tests Descriptive Statistics Confidence Intervals ab: Background: The Norwegian aluminum industry developed and implemented a protocol for prospective monitoring of employees' exposure using personal samplers. We analyzed these data to develop prediction lines to construct a job exposure matrix ( JEM) for the period 1986-1995. Methods: The protocol for personal monitoring of exposure was implemented in all seven Norwegian aluminum plants in 1986 and continued until 1995. Personal samplers were used to collect total dust, fluorides, and total polycyclic aromatic hydrocarbons (PAH). In addition, exposure could be categorized according to process, i.e. prebake, Søderberg, and 'other'. We constructed four-dimensional JEMs characterized by: Plant, Job descriptor, Process, and Year. Totally 8074, 6734, and 3524 measurements were available for dust, fluorides, and PAH, respectively. The data were analyzed using linear mixed models with two-way interactions. The models were assessed using the Akaike criterion (AIC) and unadjusted R². The significance level was set to 10% (two-sided) for retaining variables in the model. Results: In 1986, the geometric mean (95% confidence interval in parentheses) for total dust, total fluorides, and PAH were 3.18 (0.46-22.2) mg m-3, 0.58 (0.085-4.00) mg m-3, and 33.9 (2.3-504) µg m-3, respectively. During 10 years of follow-up, the exposure to total dust, fluorides, and PAH decreased by 9.2, 11.7, and 14.9% per year, respectively. Each model encompassed from 49 to 72 significant components of the interaction terms. The interaction components were at least as important as the main effects, and 65 to 91% of the significant components of the interaction terms were time-dependent. Conclusion: Our prediction models indicated that exposures were highly time-dependent. We expect that the time-dependent changes in exposure are of major importance for longitudinal studies of health effects in the aluminum industry. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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