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目的 分析SARS发病率与气压、气温的关系 ,探讨影响SARS发病流行的自然环境因素。方法 应用描述流行病学、相关与回归分析方法研究广州和香港SARS发病率与当地平均气压、平均气温的相关和多元线性回归关系。结果 广州和香港SARS暴发期与消退期相比 ,平均气压分别高 5 5hPa和 6 2hPa,平均气温分别低 4 3℃和6 0℃。SARS发病率与平均气压成正相关 ,与平均气温成负相关 ,多元线性回归分析结果表明 ,SARS发病与气压气温的回归关系有显著性差异。结论 SARS的发病流行受气压、气温等自然环境因素的影响。
Objective To analyze the relationship between the incidence of SARS and air pressure and air temperature and to explore the natural environmental factors that affect the prevalence of SARS. Methods The epidemiological, correlation and regression analysis methods were used to study the correlation and multiple linear regression between incidence rates of SARS in Guangzhou and Hong Kong, local average air pressure and average temperature. Results The mean pressure of SARS outbreaks in Guangzhou and Hong Kong was 55 hPa and 62 hPa, respectively, compared with the regression period. The average temperature was lower by 43 ℃ and 60 ℃, respectively. The incidence of SARS was positively correlated with mean air pressure and negatively correlated with mean air temperature. Multivariate linear regression analysis showed that the regression relationship between SARS incidence and air temperature was significantly different. Conclusions The prevalence of SARS is influenced by natural environment factors such as air pressure and air temperature.