This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Definition & Concepts, Subject name: Social & Preventive Medicine
The useful feility indicator where bih registration statistics do not exist or are inadequate is: 
Select and explain. 
A. Aboion rate, B. Child-woman ratio, C. Male-female ratio, D. Net reproduction rate
B: Child-woman ratio
Answer: B: Child-woman ratio 
Explanation: Child-Woman ratio It is no. of Children 0-4yrs of age per 1000 women of child bearing age,usually defined as 15-44 or 49 yrs of age. This ratio is used where bih registration statistics do not exist or are inadequate