This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Which of the following indices measures burden of disease in a defined population and the effectiveness of the interventions: March 2013 (e) 
Select and explain. 
A. HALE, B. DALY, C. PQLI, D. HDI
B: DALY
Answer: B: DALY 
Explanation: Ans. B i.e. DALY Disability-adjusted life year (DALY) It is a measure of overall disease burden, expressed as the number of years lost due to ill-health, disability or early death. The DALY is becoming increasingly common in the field of public health and health impact assessment (HIA). It "extends the concept of potential years of life lost due to premature death...to include equivalent years of 'healthy' life lost by viue of being in states of poor health or disability."