puerperal mortality

例句：

1. 1. The studyfound that the puerperalmortality rate in rural areas was significantly higherthan in urban areas.
   研究发现，农村地区的产褥期死亡率明显高于城市地区。
2. 2. The government hasimplemented several measures to reduce puerperal mortality and improve maternal health.
   政府已经采取了多项措施来降低产褥期死亡率并改善母婴健康。
3. 3. The studyalso found that the puerperal mortality rate is closely related to thequality of healthcare services provided during childbirth.
   研究还发现，产褥期死亡率与分娩期间提供的医疗服务质量密切相关。