Census Concepts

Crude birth rate=(Number of live births during the year)/(Mid-year population) x 1000
Age-specific fertility = (Number of live births in a particular age-group)/(Mid-year female population of the same age-group) x 1000

General fertility rate (GFR) = (Number of live births in a year)/(Mid-year female population in the age-group (15-49) years) x 1000

Crude death rate (CDR) =(Number of deaths during the year)/(Mid-year population ) x 1000

Infant mortality rate (IMR) = (Number of infant deaths during the year)/(Number of live births during the year) x 1000

Neo-natal mortality rate (NMR) = (Number of infant deaths of < than 29 days during the year)/(Number of live births during the year) x 1000