Infant Mortality

Content last reviewed: 20 January 2017


Infant mortality is a over-arching measure of population health and an important measure of the wellbeing of infants, children and pregnant women. Infant mortality is the term that describes the deaths of all live births up to one year old. Infant mortality rate is defined as the death of a baby up to one year per 1,000 live births.

Neonatal deaths are the death of a live birth up to 28 days old.  The neonatal mortality rate is the number of neonatal deaths per 1,000 live births (1) Perinatal deaths are the deaths of all births up to 7 days old, including stillbirths. The perinatal mortality rate is the number of perinatal deaths per 1,000 births.

A stillbirth is a baby delivered with no signs of life after 24 completed weeks of pregnancy.  A stillbirth rate is the number of stillbirths per 1,000 live births and stillbirths.

Reducing infant mortality is a shared NHS and PH outcome addressing premature mortality and providing a key measure for health inequalities as infant mortality is a significant factor in overall life expectancy.

Last updated Wednesday, 18th January 2017