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[Association between low blood lead exposure and nervous system symptoms]
Qianru Dou1, Yan Wang2, Chang Cai3
1Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Changsha 410078, China.
Objective:
To explore the association between low blood lead exposure and nervous system symptoms among the workers exposed to oil paint.
Methods:
Through cluster sampling, workers with occupational oil paint exposure in 2 factories were selected to conduct a questionnaire survey, biochemical detection and health examination. χ2 test and unconditional logistic regression analysis were performed for the determinants analysis.
Results:
A total of 525 oil paint workers completed the survey, in whom, 55 (10.5%) were blood lead positive, the mean of blood lead concentration was (0.0884±0.0539) mg/L, 278 (52.95%) had nervous system like symptoms and 69 (13.14%) had peripheral neuropathy symptoms. Multinomial logistic regression analysis showed that working age (OR=1.827), drinking (OR=1.607), health status (OR=3.862), blood lead (OR=1.983) were risk factors for nervous system like symptoms. Working age (OR=2.282), and drinking (OR=2.704) were risk factors for peripheral neuropathy.
Conclusion:
Low blood lead exposure might be associated with nervous system like symptoms.
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