Modeling the effects of atmospheric pressure on suicide rates in the USA using geographically weighted regression

Low atmospheric pressure may increase depression and suicide through inducing hypoxia. Previous studies have not evaluated the geographic variation of this relationship across the United States. Analyses were based on three groupings of age-adjusted completed suicide rates (all suicide, firearm-related suicide, non-firearm-related suicide) from 2286 counties in the United States. Multiple regression was used to determine the overall relationship between atmospheric pressure and completed suicide rates. Geographically weighted regression (GWR) models were used to obtain local coefficient estimates. A negative correlation between atmospheric pressure and completed suicide rates was observed for all three suicide groupings (p-value

大气气压偏低或可通过诱发缺氧状态，增加抑郁发作与自杀行为的发生风险。既往尚无研究针对美国境内该关联的地理异质性开展评估。本研究分析所用数据来自美国2286个县的三类年龄标准化已完成自杀死亡率，分别为全自杀、涉枪自杀及非涉枪自杀死亡率。采用多重回归模型明确大气气压与已完成自杀死亡率之间的整体关联；借助地理加权回归（Geographically Weighted Regression, GWR）模型获取局部系数估计值。三类自杀分组均观测到大气气压与自杀死亡率呈负相关（P值