case-death ratio

例句：

1. 1. The hospital's case-death ratio is a key metric for evaluating its performance.
   医院的案例死亡率是评估其表现的关键指标。
2. 2. The study found that the case-death ratio in this region has decreased significantly.
   研究发现，该地区的病例死亡率大幅下降。
3. 3. The healthcare system needs to improve its case-death ratio to ensure patient safety.
   医疗保健系统需要改进其病例死亡率比率，以确保患者安全。