McCraw D S, Joyner R E, Cole P
J Occup Med. 1985 Mar;27(3):220-2.
A retrospective follow-up mortality study of white male employees of an oil refinery located in southern illinois revealed a statistically significant excess number of deaths due to leukemia compared with the experience of U.S. white males (standardized mortality ratio [SMR] = 213; 95% confidence interval [Cl], 117 to 358). The excess was due mainly to acute myeloid leukemia (AML) (SMR = 394; 95% Cl, 172 to 788). From 1973 to 1982, fourteen leukemia deaths were identified; eight of the cancers were of the AML cell type. The work histories of the decedents were examined for the potential for benzene exposure. Although specificity of the work histories was limited, the investigation has shown that the subjects did not work in jobs identified as having the highest benzene exposures. At this time, the excess leukemia remains unexplained.
一项针对伊利诺伊州南部一家炼油厂白人男性员工的回顾性随访死亡率研究显示，与美国白人男性的情况相比，白血病导致的死亡人数在统计学上显著超标（标准化死亡率[SMR]=213；95%置信区间[Cl]，117至358）。超标主要归因于急性髓细胞白血病（AML）（SMR=394；95%Cl，172至788）。1973年至1982年期间，确认有14例白血病死亡；其中8例癌症为AML细胞类型。对死者的工作经历进行了检查，以确定是否有可能接触苯。尽管工作经历的特异性有限，但调查表明，这些受试者并未从事被确定为苯暴露量最高的工作。目前，白血病超标现象仍无法解释。
