Analysis of deviance analysis table of logistic regression of proportion Beijing isolates as a function of age and sex of the patient, location (urban vs. rural), and sampling (hospital vs. population).

*: Estimates, deviance and their p-values are calculated by correcting for possible confounding effects of all the other explanatory variables. (see Materials and methods).*：估计值、偏差值及其对应的p值通过校正所有其他解释变量可能产生的混杂效应计算得到（详见材料与方法）。