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In 2022, 1 in 10 babies born in the U.S. were premature, an 8% increase since 2014 after a steady decline in the early 2010s. Babies born at less than 37 weeks of gestation are considered preterm ...
Infant mortality is the death of an infant before the infant's first birthday. [ 1] The occurrence of infant mortality in a population can be described by the infant mortality rate ( IMR ), which is the number of deaths of infants under one year of age per 1,000 live births. [ 1] Similarly, the child mortality rate, also known as the under-five ...
Preterm birth, also known as premature birth, is the birth of a baby at fewer than 37 weeks gestational age, as opposed to full-term delivery at approximately 40 weeks. [ 1] Extreme preterm [ 2] is less than 28 weeks, very early preterm birth is between 28 and 32 weeks, early preterm birth occurs between 32 and 34 weeks, late preterm birth is ...
Infant (from the Latin word infans, meaning 'baby' or 'child' [ 1]) is a formal or specialised synonym for the common term baby. The terms may also be used to refer to juveniles of other organisms. A newborn is, in colloquial use, an infant who is only hours, days, or up to one month old. In medical contexts, a newborn or neonate (from Latin ...
Childbirth, also known as labour, parturition and delivery, is the completion of pregnancy where one or more babies exits the internal environment of the mother via vaginal delivery or caesarean section. [ 7] In 2019, there were about 140.11 million human births globally. [ 9] In the developed countries, most deliveries occur in hospitals, [ 10 ...
The infant mortality rate 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 in 2019 was 28 according to the United Nations [4] and the projected estimate for 2020 was 30.8 according to the CIA World ...
Birth rate, also known as natality, is the total number of live human births per 1,000 population for a given period divided by the length of the period in years. [ 1] The number of live births is normally taken from a universal registration system for births; population counts from a census, and estimation through specialized demographic ...
Newborns typically lose 7–10% of their birth weight in the first few days, but they usually regain it within two weeks. [17] During the first month, infants grow about 1 to 1.5 inches (2.5 to 3.8 cm) and gain weight at a rate of about 1 ounce (28 g) per day. [17] Resting heart rate is generally between 70 and 190 beats per minute. [18]