50年代以来,人们已经观察到儿童死亡率在发展中国家普遍下降的现象。可是,儿童死亡率高低不等的现象不仅在不同国家持续存在,在同一国家里不同的社会经济水平人群也继续存在。最近完成的题目为“发展中国家的儿童死亡率:社会经济差异、趋势和意义”的研究,其目的在于调查发展中国家的儿童死亡率趋势和社会经济状况之间的关系。国际人口处与联合国地区委员会合作进行了本课题的研究。该项研究包含了各个不发达地区的国家:非洲(肯尼亚)、拉丁美洲(哥斯达黎加、洪都拉斯和巴拉圭城市)和亚洲(约旦和泰国)。通过比较,讨论了这六个国家儿童死亡率情况:分析了社会经济 Since the 1950s, it has been observed that there has been a general decline in child mortality rates in developing countries. However, the phenomenon of varying levels of child mortality not only persists in different countries, but also people in different socio-economic levels in the same country. The recently completed study entitled “Child mortality in developing countries: socio-economic differences, trends and implications” was intended to investigate the relationship between trends in child mortality and socio-economic conditions in developing countries. International Population Division and the United Nations Regional Commission conducted a study of this topic. The study includes countries in various underdeveloped regions: Africa (Kenya), Latin America (Costa Rica, Honduras and Paraguay) and Asia (Jordan and Thailand). By comparison, the child mortality rates in the six countries are discussed: socio-economic analysis