Additional file 1 of Modeling the effect of age on quantiles of the incubation period distribution of COVID-19

Additional file 1 1. Variables description Age: age of the confirmed case InDate: infection date OutDate: onset date InPeriod: incubation Period 2. Values of variables Age: the original age of the confirmed case InDate and OutDate: for convenience, the values of InDate and OutDate were represented as the number of days departing from December 31, 2019, on which WHO announced the disease COVID-19 have become a public health incident. For example, the date January 1, 2020 takes the value 1. Incubation Period: Onset date - Infection date + 1

附加文件1
1. 变量说明
Age：确诊病例的年龄
InDate：感染日期
OutDate：发病日期
InPeriod：潜伏期
2. 变量取值说明
Age：采用确诊病例的原始年龄数值
InDate与OutDate：为便于统一处理与分析，以世界卫生组织（WHO）正式宣布新型冠状病毒肺炎（COVID-19）为国际关注的突发公共卫生事件的当日——即2019年12月31日为基准日，将二者的取值表示为距该基准日的天数。例如，2020年1月1日对应的取值为1。
潜伏期：发病日期 - 感染日期 + 1