demography

Changes in national demography can have a profound impact on the demand for healthcare services.

(Chinese) 国家人口结构的变化会对医疗服务的需求产生深远影响。

Students of demography study patterns of birth, death, and migration within specific regions.

(Chinese) 人口统计学的学生研究特定区域内的出生、死亡和迁徙模式。