It is learnt that the first study of the population mortality rate and per capita income, educational level, and whether the relationship between smoking were analyzed.

据悉，研究人员先对人口死亡率和人均收入、受教育程度，以及是否吸烟之间的关系进行了分析。

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In an urban population with good access to professional care, we found a high neonatal mortality rate, often due to preventable conditions.

在可获得专业护理的城区人群中，新生儿死亡率高通常与预防条件有关。

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The overall mortality rate three years after the injury was 16%, or about one in six people, compared to average expected mortality in the general population of 5.9%, according to the study.

根据研究，受创三年后的总死亡率为16%，或大约六分之一，比照起来一般人口集中地区的平均预期死亡率为5.9%。

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The United Nations Population Fund reports that South Sudan has the highest maternal mortality rate in the world.

BBC: Viewpoint: South Sudan has not lived up to the hype

Whale researchers use population models that factor a species' reproductive rate and its natural mortality to come up with an estimate of how many are likely dying.

MSN: Feds to reroute SF Bay ships to protect whales

It reported that they were more likely to be poor and that their infant mortality rate was half as high again as that of the rest of the population.

ECONOMIST: Black Colombians suffer ��structural discrimination��