In crude death rate the population is taken as on -

A rate comprises the following elements → i) Numerator ii) Denominator iii) Time specification        iv) Multiplier Numerator → Refers to the number of times an event (e.g. sickness, birth, death) has occurred in a population, during a specified time period. Numerator is a component of the denominator in calculating a rate, but not in a ratio. Denominator → Denominator may be :- i) Related to population Mid year population → population estimated on first of July of an year Population at risk Person - time Person distance ii) Related to total events  As in case fatality rate, denominator is total number of cases rather than total population.