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Multilingual Demographic Dictionary, second unified edition, English volume

Infant mortality

Multilingual Demographic Dictionary, second unified edition, English vol.
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Infant mortality  (INFANT mortality)


The mortality of live-born children who have not yet reached their first birthday is called infant mortality 1. The mortality of live-born children who die before reaching a certain age taken as four weeks or 28 days, the so-called neo-natal period 3, is called neo-natal mortality 2. The mortality during the first week of life and between the first week until before 28 days are called respectively early neo-natal mortality 4 and late neo-natal mortality 6★. The term post-neonatal mortality 5 refers to deaths after the neo-natal period, but before reaching the age of one year.

  • 3. In certain statistics the neo-natal period is defined as the first month of life. The term early infancy is occasionally used as an approximate equivalent to the neo-natal period, as, e.g., in "diseases of early infancy."

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