The number of deaths during the first 28 completed days of life per 1000 live births in a given year or period is defined as ______. 

The correct answer is neonatal mortality rate.

Key Points

• The number of deaths during the first 28 completed days of life per 1000 live births in a given year or period is defined as the neonatal mortality rate.
• There are some concerns about the quality of neonatal mortality reporting both internationally and within states, particularly in terms of defining a live birth and/or reporting both birth and death certificates for newborns with very low birth weights.
• When neonatal death certificates are matched to corresponding birth certificates, much more additional and valuable data (birth weight, mother's smoking status, when prenatal care began, etc.) is obtained for neonatal mortality risk analysis.

Important Points

• The number of newborn deaths per 1,000 live births is known as the infant mortality rate.
• The infant mortality rate is an essential indicator of a society's general health, in addition to providing crucial information regarding maternal and baby health.
• The crude mortality rate is derived by dividing the number of fatalities in a particular time by the number of people who were at risk of dying during that period.
• A death rate that is limited to a certain age group is known as an age-specific mortality rate.