整体估计 meaning in Chinese

global estimation

On the basis of more detailed and complete data , and more reliable methods , who now estimates that the case fatality ratio of sars ranges from 0 % to 50 % depending on the age group affected , with an overall estimate of case fatality of 14 % to 15 %
通过更详细和完全的数据以及更可靠的方法， who现在估计sars病死率的范围在0 %到50 %之间，随感染的年龄组变化，整体估计死亡率为14 %到15 % 。