<prompt> True about crude bih rate is all exceptRatioFeility indicatorStillborn excludedNot affected by age distribution of the population  <response>: 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 Bih rate is not a ratio. In ratio, the numerator is not a component of denominator Reference : Park;s textbook of preventive and social medicine, 23rd edition, pg no: 55,488 