What Are the Most Common Causes of Neonatal Mortality?

Infant mortality rate (IMR) refers to the ratio of the number of deaths under the age of an infant to the number of births. It is generally calculated on an annual basis and expressed in thousands. Where infant mortality is high, it can also be expressed as a percentage. Infant mortality is an important indicator of the health and socio-economic development level of a country's and national residents, especially an important indicator of maternal and child health work. Of the death tolls under the age of one registered in this year, some were born in the previous year, and the caliber of the number of births this year is inconsistent, resulting in inaccurate calculation results that need to be adjusted. The most common simple adjustment method is to adjust the number of births in the denominator. According to experience, 2/3 of the under-age babies who died this year were born this year, and 1/3 were born the previous year.

Infant mortality

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Infant mortality is related to many factors, such as: medical level, medical common sense, environmental factors, neonatal weight, length of pregnancy, infant gender, customs, feeding patterns, and so on.

Before the founding of the PRC, the infant mortality rate in China was about 200 ; it declined rapidly after the founding of the PRC, which was 28.38 in 2000; 14.9 in 2008; 8.0 in 2017 ^[1] ; and 6.1 in 2018 ^[2] . The infant mortality rate in the United States in 2017 was 5.7 ; the infant mortality rate in the United Kingdom in 2017 was 3.7 ; the infant mortality rate in France was 3.5 ; the infant mortality rate in Germany in 2017 was 3.1 ; and the infant mortality rate in Japan in 2017 was 1.9 .