What is the Infant Mortality Rate defined as?

What is the Infant Mortality Rate defined as?

• A. Number of deaths under age 5 per 1,000 births.
• B. Average number of babies that die during their first year per 1,000 births.
• C. Number of babies who die in the first month per 1,000 births.
• D. Rate of births per 1,000 population.

Answer: (B)

Infant mortality rate measures how many babies die before reaching their first birthday for every 1,000 live births in a given year. It reflects overall health conditions, access to care, and social factors that affect newborns and infants. The correct option captures deaths that occur at any time in the first year of life, not just the neonatal period (first month) or deaths before age five, and it uses live births as the baseline. The other choices describe related yet different measures: under-5 mortality covers ages 0–4, neonatal mortality is deaths in the first month, and birth rate is births per 1,000 population.

Infant mortality rate measures how many babies die before reaching their first birthday for every 1,000 live births in a given year. It reflects overall health conditions, access to care, and social factors that affect newborns and infants. The correct option captures deaths that occur at any time in the first year of life, not just the neonatal period (first month) or deaths before age five, and it uses live births as the baseline. The other choices describe related yet different measures: under-5 mortality covers ages 0–4, neonatal mortality is deaths in the first month, and birth rate is births per 1,000 population.