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目的探讨华北某重污染城市大气PM_(2.5)与PM_(10)浓度与该市居民神经系统疾病急救人次的关系。方法收集该城市2013年1月1日至2015年12月31日的PM_(2.5)与PM_(10)日均浓度、气温和相对湿度,以及每日神经系统疾病急救人数,采用广义相加时间序列模型,控制长期趋势、气象因素、“星期几效应”和节假日效应等混杂因素后,分析大气PM_(2.5)、PM_(10)浓度与每日神经系统疾病急救人次的关系。结果大气中PM_(2.5)(lag 03)与PM_(10)(lag 04)浓度每升高10μg/m~3,该市居民因神经系统疾病急救的人次分别增加0.75%(95%CI 0.34%~1.17%)和0.35%(95%CI 0.05%~0.66%)。结论大气颗粒物污染尤其是PM_(2.5)浓度的升高可能增加了居民神经系统疾病的风险。
Objective To explore the relationship between PM_ (2.5) and PM_ (10) concentrations in the polluted cities in North China and the number of emergency rescues in residents of the city. Methods The daily PM_ (2.5) and PM_ (10) concentrations, air temperature and relative humidity of the city from January 1, 2013 to December 31, 2015 were collected and the number of emergency patients receiving daily neurological diseases was collected. Generalized additive time (2.5) and PM 10 (10) concentration and the number of emergency rescue trips per day for neurological diseases were analyzed after controlling for long-term trends, meteorological factors, the “day of the week effect” and holiday effects. Results When the concentration of PM_ (2.5) (lag_3) and PM_ (10) (lag_4) in the atmosphere was increased by 10 μg / m ~ 3, the residents of the city increased 0.75% (95% CI 0.34% ~ 1.17%) and 0.35% (95% CI 0.05% -0.66%). Conclusion Atmospheric particulate pollution, especially the increase of PM 2.5 concentration, may increase the risk of residents’ nervous system diseases.