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对某石化企业调查结果表明：其周围环境空气中ＳＯ２、ＮＯｘ、ＴＳＰ、非甲烷总烃等污染指标不同程度超标，企业职工及附近居民呼吸道疾病患病率明显高于对照人群（Ｐ＜０．０５），职业、文化程度、吸烟、家用燃料、人均住房面积、环境空气质量指数是影响人群呼吸道疾病发生的危险因素，最高相对危险度ＲＲ值为４．９２７。
The investigation results of a petrochemical enterprise showed that the pollution indicators such as SO2, NOx, TSP, and non-methane total hydrocarbons in the surrounding air were excessively excessive, and the prevalence of respiratory diseases among employees and nearby residents was significantly higher than that of the control population (P<0. 05) Occupation, education level, smoking, household fuel, per capita housing area, and ambient air quality index are risk factors affecting the occurrence of respiratory diseases in the population. The highest relative risk RR is 4.927.