Crude bih rate denominator is -
<p> Crude bih rate= Number of live bihs in a year per 1000 mid-year population. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:488. <\p>
Total no of live bihs in that year
1000 live bihs
Total number of bihs
Mid year population
Non communicable diseases