This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: PQLI, HDI, MDPI, BPL, Subject name: Social & Preventive Medicine
In the calculation of Years of Potential Life Lost (YPLL), the denominator is- 
Select and explain. 
A. Population under 75 years of age, B. Midyear population, C. Population in the ages of 15 to 65 years, D. Population above 15 years of age
A: Population under 75 years of age
Answer: A: Population under 75 years of age 
Explanation: Years of potential life lost (YPLL)/Potential years of life lost (PYLL) An estimate of the average years a person would have lived if he or she had not died prematurely. It is a measure of premature moality/death. Deaths occurring in individuals age 75 or older are NOT included in the calculation. For YPLL calculation, Numerator is years of potential life lost. denominator is the population under 75 years of age. - It is based on the years of life lost through premature death.