This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Non communicable diseases, Subject name: Social & Preventive Medicine
With a bihrate of 30 per thousand, in a subcentre of 5000 population, what would be the number of pregnant women - 
Select and explain. 
A. 150, B. 155, C. 160, D. 165
D: 165
Answer: D: 165 
Explanation: Crude bih rate = Annual number of live bihs per 1000 mid year population Here, live bih =30 per 1000 So for 5000 population = 30/1000 x 5000 = 150 Pregnancy wastage =10% 150x 10/100 = 15 Total pregnant women = 150+15+165