In calculating crude bih rate which of the following is used as denominator: (A) Women in 15-49 yrs age group, (B) All persons in 15-49 yrs age group, (C) Mid year population, (D) All live bihs
Answer is C. Bih rate = Number of live bihs during the year X 1000 / Estimated mid year population Unsatisfactory measure of feility because the total population is not exposed to child bearing Reference : Park&;s textbook of preventive and social medicine, 23rd edition, pg no: 488