Objective: To explore risk factors of the patients with skin lesions from burning high-arsenic-contaminated coal in southern Shanxi Province.
Methods: An epidemiological cross-sectional study was conducted in two villages of Hanbin District, Ankang City, Shanxi Province, where 198 participants were randomly selected. The parts of factors which were not significantly different were rejected via the single variable analysis and the collinear relationships were removed between the other factors using principal components analysis, and then the major risk factors of the skin lesions from burning high-arsenic-contaminated coal were obtained from stepwise logistic regression.
Results: The single variable analysis showed that 11 influential variables were significantly associaed with coal-burning-arsenic-associated skin lesions, while principal component and logistic regression analysis showed that 6 variables could be the principal, which were period of burning arsenic-contaminating coal, ege, the arsenic content in blood, resident duration, the arsenic content in urine and hair, respectively.
Conclusion: The results suggested that the major risk factors of the skin lesions related to burning coal-contaminating arsenic should be period of burning arsenic-contaminating coal, age, the arsenic content in blood, resident duration, the arsenic content in urine and hair.
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