<prompt> Which is the best index for burden of disease and effectiveness of interventions?Case fatality rateDisability adjusted life yearsDependency ratioMorbidity data  <response>: Ans. b Disability adjusted life years Disability adjusted life years : Is a measure of the burden of disease in a defined population and the effectiveness of interventions; It expresses years lost to premature death and years lived with disability adjusted for its severityALSO REMEMBER DALYs can measure both mortality and disability together Case fatality rate measures virulence of an organism or killing power of a disease Dependency ratio measures the need for society to provide for its younger and older groups Morbidity data measures any departure from health 