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Elevated Serum Liver Enzymes and Fatty Liver Changes Associated With Long Driving Among Taxi Drivers
被引:6
作者:
Lippmann, Steven J.
[1
]
Richardson, David B.
[1
]
Chen, Jiu-Chiuan
[1
,2
]
机构:
[1] Univ N Carolina, Gillings Sch Global Publ Hlth, Dept Epidemiol, Chapel Hill, NC 27599 USA
[2] Univ So Calif, Keck Sch Med, Dept Prevent Med, Los Angeles, CA 90033 USA
关键词:
fatty liver disease;
professional driving;
occupational epidemiology;
taxi drivers;
alanine aminotransferase;
ALANINE AMINOTRANSFERASE;
ADULT-POPULATION;
AIR-POLLUTANTS;
UNITED-STATES;
DISEASE;
EXPOSURE;
PREVALENCE;
MORTALITY;
RISK;
TIME;
D O I:
10.1002/ajim.20969
中图分类号:
R1 [预防医学、卫生学];
学科分类号:
1004 ;
120402 ;
摘要:
Background Previous studies suggested increased morbidities and mortalities of liver diseases in drivers. Methods To examine whether driving (monthly driving distance; tenure) is associated with elevated alanine aminotransferase (ALT), aspartate aminotransferase (AST), or chronic fatty liver (FL) changes, we performed a cross-sectional, secondary analysis of the Taxi Drivers' Health Study (n = 1,355), adjusting for clinical, demographic, and lifestyle factors. Results Prevalence of elevated ALT, elevated AST, and fatty liver changes were 22.0%, 5.1%, and 9.3%, respectively. Driving distance had a positive association with elevated ALT with a prevalence ratio of 1.35 (95% CI: 0.98, 1.89) comparing the highest versus lowest driving quartile. This association differed by alcohol use, with a corresponding prevalence ratio of 2.08 (95% CI: 1.30, 3.33) among "past/current" drinkers but no association among "never" drinkers. Similar patterns were found for AST but estimates were less stable. We found a curvilinear response pattern for fatty liver changes; prevalence first increased with years as a taxi driver and then receded in the highest ranges of driving tenure, regardless of the alcohol history. Conclusions Our results provide evidence that long driving is associated with both short-term and chronic liver insults, although alcohol use appears to modify this putative effect. Am. J. Ind. Med. 54:618-627, 2011. (C) 2011 Wiley-Liss, Inc.
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页码:618 / 627
页数:10
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