Health Effects of Gasoline Vapor and Noise Exposures Among Gasoline Distribution Workers
Date Issued
2005
Date
2005
Author(s)
Chiang, Wen-Kai
DOI
en-US
Abstract
Noise and gasoline vapor exposures are common hazard in the petrochemical company. In the process of manufacturing products and distribution, gasoline distribution workers exposed easily to such kinds of hazard. This thesis embraced two parts of studies, the first part is “Reduction of post-shift traffic injuries among gasoline station workers: Are they related to the reduction of occupational gasoline vapor exposure? ”, and the second part is “Association between noise-induced hearing loss and prevalence of hypertension in male petrochemical workers ”.
In the first part, the occupational injury registry data of 1991-2000 in a petrochemical company containing 20,000 workers analyzed. Cumulative injury rate (CIR) calculated to estimate lifetime risk. The potential workday loss (PWDL) and the potential salary loss (PSL) calculated for traffic injuries. Workers of gasoline sales compared with those without gasoline exposure for commuting traffic injuries. The rate ratio (RR) calculated based on a person-time data. The CIR dropped 3.14 times during 1997-2000 for commuting accidents on the way back home compared with that during 1991-92, and the PWDL and PSL dropped 25.2 and 21.5 times, respectively. The RRs of commuting accidents on the way back home in the exposed group significantly decreased from 2.15 to 0.53. The decreases of commuting injuries on journey back home for gasoline workers was probably related to the effective reduction of solvent exposure. In the second part, we determined the association between the noise-induced hearing loss and hypertension in a group of male petrochemical workers. A cross-sectional study was conducted between September 2001 and June 2003 in a population of workers who participated in two annual health examinations, including audiometry, in a petrochemical company of Taiwan. 662 male workers were recruited. Multiple logistic regression analyses was performed to explore if presence of hypertension was associated with existed NIHL after controlling other risk factors, including family history, age, body mass index (BMI), and shift work. The multiple logistic regressions showed that age (Adjusted OR=1.1), BMI (Adjusted OR=1.2), family history of hypertension (Adjusted OR=3.4), shift work (Adjusted OR=2.9), and NIHL (Adjusted OR=1.7) associated with hypertension. This outcome suggests that there may be a population of worker with noise-induced hearing loss (at least one ear with hearing threshold more than 25 dB) was at high risk of hypertension. Although the multiple associations between NIHL and hypertension needed further assessed, the audiometry could used as one auxiliary method to elicit more accurate history of noise exposure.
Subjects
傷害成本
通勤事故
油氣回收裝置
潛在薪資損失
潛在工日損失
累積傷害率
噪音
噪音引起聽力損失
Cost of injury
Commute injury
Gasoline recovery device
Potential salary loss
Potential workday loss
Cumulative injury rate
Noise
Noise-induced hearing loss
Hypertension
Type
thesis
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