油毡工人比例死亡比的研究

对全国20个油毡厂工人的癌症和其它几种慢性病进行了比例死亡比的研究。接触组按照接触沥青种类分为混合组和石油组,与对照组比较,男性接触组和混合组心血管病的SPMR分别为1.53(p<0.05)和1.45(p<0.05)。接触组和混合组、石油组肺癌超出量尤为显著,SPMR分别为3.38(P<0.01)和2.8l(P<0.01)、4.93(P<0.01)。混合组重、中暴露工作区SPMR分别为3.14(P<0.01)、3.03(P<0.05),轻暴露工作区SPMR不明显,重暴露区食道癌SPMR为2.02(P<0.01)。石油组重中暴露工作区肺癌SPMR分别为5.39(P<0.01)、4.67(P<0.01),均明显高于对照组。同时也进行了癌症比例死亡比(PCMR)的研究,与SPMR研究结果相似,说明油毡厂生产作业工人的肺癌发病与其职业有很强的联系。

INVESTIGATION SURVEY ON STANDARDIZED PROPORTIONAL MORTALITY RATIO AMONG ASPHALT FELT-MAKING WORKERS

A study on proportional mortality ratio of cancer and some other chronic diseases among workers in 20 asphalt felt-making factories is reported.The exposed group is divided into a mixed group and a petroleum group according to types of asphalt the workers were exposed to. Compared with the control group, the standardized proportional mortality ratio (SPMR) of cardiovascular disease for men in the exposed group and mixed group are 1.53 (P<0.05) and 1.45 (P<0.05) respectively.A very large excess of lung cancer can be found-in the exposed group, the mixed group and the petroleum group, and the SPMR are 3.38 (P<0.01) , 2.81 (P<0.01) and 4.93 (P<0.01) respectively. The SPMR in the mixed group in heavy and middle exposure working area are 3.14 (P<0.01) and 3.03 (P<0.05) respectively. The SPMR is not obvious in light exposure working area.The SPMR of esophagus cancer in exposure working area is 2.02 (P<0.01) .The SPMR of lung cancer in the petroleum group in heavy, middle and light exposure working area are 5.39 (P<0.01) , 4.67 (P<0.01) respectively, obviously higher than those in the control group on the average. Study on proportional cancer mortality ratio (PCMR) is also conducted and the result is similar to the study of the SPMR. It is indicated that the occurrence of lung cancer has the very close relationshi p with the occupation.