Ratios of the indirect effects to the direct effects on total hospitalization costs (n = 30,041).

Abbreviations: CI, confidence intervalaRatio; Effect ratios were derived from dividing indirect effects by direct effectsbMissing Barthel Index data: Barthel Index data were missing in 4,100 of the 30,041 pneumonia patientsRatios of the indirect effects to the direct effects on total hospitalization costs (n = 30,041).缩写说明：CI，即置信区间（confidence interval）；注a：效应比通过将间接效应除以直接效应计算得到；注b：巴塞尔指数（Barthel Index）缺失数据情况：30041名肺炎患者中，共有4100例缺失巴塞尔指数数据；本次分析针对总住院费用的间接效应与直接效应之比（样本量n=30041）。