While a natural grouping would be geographically representative, using some regional identification (e.g., WHO regions), from a practical perspective it is not always possible owing to insufficient availability of empirical data in some countries or regions.
4517
即使是地理上非常临近的地方,大流行的影响及其按性别和年龄划分的规模也可能会有很大差异。
Even within close geographic proximity, the impact of the pandemic, and its magnitude by sex and age can vary significantly.
4518
K均值法是一种常被用于表征数据和将数据集分组的方法。
K -means is a method commonly used to characterize data and partition a data set into groups.
4519
根据死亡时的平均年龄和人口平均年龄,以及总体超额死亡率和占总死亡人数的比例,国家被分为若干聚类。
Countries are grouped into clusters based on mean ages at death and of population, as well as the overall excess mortality rates and porportion of total deaths.
4520
选择的聚类数是为了将聚类之间的差异最大化,并将聚类内按性别和年龄划分的差异最小化。
The number of clusters is chosen to maximise the variation between clusters and to minimise the variation within clusters by age and sex.