Infant mortality rate

The ratio of number of deaths under one year of age to the total live births per 1000 live births per year is termed as:

A. Infant mortality rate. 
B. Child mortality rate.
C. Child morbidity rate. 
D. Life expectancy rate

Answer. A. Infant mortality rate

• Infant mortality rate is defined as the ratio of infant deaths registered in a given year to the total number of live births registered in the same year, usually expressed as a rate per 1000 live births.

• It is given by the formula-

Number of deaths of children less than 1 year of age in a year

IMR = ————————————————————————————— X l000

Number of births in the same year