total mortality coefficient

例句：

1. 1.The total mortality coefficient for this disease is 20%.
   这种疾病的总死亡率为20%。
2. 2.The study found that the total mortality coefficient was higher in urban areas.
   研究发现，城市地区的总死亡率更高。
3. 3. The mortality rate of this disease has decreased significantly since the introduction of new treatments.
   自从引入了新的治疗方法后，这种病的死亡率大幅下降。