Effect of the type of the index farm and of the IMV situation in the community on the proportion of HEV-positive pigs sent to the slaughterhouse.

Summary statistics obtained thanks to a generalised estimating equation (GEE) logistic regression model with the simulation being included as a repeated statement.本研究借助广义估计方程（generalised estimating equation, GEE）逻辑回归模型获得了汇总统计量，且将模拟项以重复测量设定的形式纳入该模型。