Mean absolute percentage difference of excess hospitalization rates from annual hospitalization rates of laboratory confirmed infections in a pediatric cohort.

Excess rates were estimated from the log-linear Poisson model using a Bayesian approach with the virus proxies of age-specific positive counts at the different lag weeks.

基于对数线性泊松模型（log-linear Poisson model），采用贝叶斯方法，以不同滞后周数下的年龄特异性阳性计数作为病毒替代指标，对超额率进行估算。