是200‰，一般都照千分之幾活產算

來源: 誌在千裏 於 2015-12-15 17:05:55 [] [舊帖] [給我悄悄話] 閱讀數 : (385 bytes)
回答: 嬰兒死亡率200%是怎麽算的？ 由 我這是咋啦 於 2015-12-15 16:56:49

The infant mortality rate (IMR) is the number of deaths of infants under one year old per 1,000 live births. This rate is often used as an indicator of the level of health in a country. The infant mortality rate of the world is 49.4 according to the United Nations and 42.09 according to the CIA World Factbook.

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