This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
Denominator in crude death rate is 
Select and explain. 
A. Mid-year population, B. Mid-year females 15-44 years, C. Mid-year married females 15-44 years, D. Mid-year males 15-44 years
A: Mid-year population
Answer: A: Mid-year population 
Explanation: Crude death rate is defined as the number of deaths per 1000 estimated mid year population in one year, in a given place. Crude death rate = ( Number of deaths during the year / Mid year population ) x 1000CDR summaries the effects of two factors:population composition age specific death rates (reflects the probability of dying)(Refer: K. Park's Textbook of Preventive and Social medicine, 24th edition, pg no: 62)