For a given population, years of life lost due to premature mortality were calculated as 45,000 and years lived with disability weighted for severity were calculated as 15,000. The Disability-Adjusted Life Year (DALY) burden for this population is:
- A 30,000
- B 45,000
- C 60,000 ✓
- D 675,000
Correct answer: C. 60,000
Explanation
DALY is the sum of years of life lost (YLL) due to premature death and years lived with disability (YLD), so 45,000 plus 15,000 equals 60,000 DALYs. One DALY represents one lost year of healthy life. Subtracting YLD from YLL gives 30,000, which is incorrect because the two components are additive, capturing both fatal and non-fatal burden in a single summary measure of population health.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
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