Sensitivity analysis of linear mixed models (random intercept, fixed slope) using (a) deaths only, (b) removing counties within 15 miles of high-density counties, and (c) removing high influence counties.

Sensitivity analysis of linear mixed models (random intercept, fixed slope) using (a) deaths only, (b) removing counties within 15 miles of high-density counties, and (c) removing high influence counties.针对（随机截距（random intercept）、固定斜率（fixed slope））线性混合模型（linear mixed models）开展敏感性分析，分别采用以下三种分析策略：(a) 仅以死亡数据作为分析对象；(b) 移除距离高密度县域15英里范围内的县域；(c) 移除高影响力县域。