The Disability-Adjusted Life Year (DALY) is composed of two components. A patient develops a non-fatal condition at age 30 that causes 30% disability for 20 years before recovery. Which component directly captures this patient's disease burden?
- A Years Lived with Disability (YLD) ✓
- B Years of Life Lost (YLL)
- C Potential Years of Life Lost (PYLL)
- D Net Reproduction Rate (NRR)
Correct answer: A. Years Lived with Disability (YLD)
Explanation
YLD = Number of incident cases × disability weight × average duration of disability. In this case, the patient does not die prematurely, so YLL = 0. The 30% disability over 20 years is captured by YLD. DALY = YLL + YLD. PYLL measures premature death before a defined reference age and is separate. NRR is a fertility measure, not a disease burden metric.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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