attributable burden: The disease burden attributed to a particular risk factor.

burden of disease (and injury): The quantified impact of a disease or injury on a population using the disability-adjusted life years (DALY) measure.

disability: In burden of disease analysis, any departure from an ideal health state.

disability-adjusted life years (DALY): A measure of healthy life lost, either through premature death or living with disability due to illness or injury. Often used synonymously with health loss.

fatal burden: The burden from dying prematurely as measured by years of life lost. Often used synonymously with years of life lost, and also referred to as ‘life lost’.

health-adjusted life expectancy (HALE): The number of healthy years a person of a particular age can expect to live.

morbidity: Ill health in an individual, and levels of ill health in a population or group.

mortality: Death.

non-fatal burden: The burden from living with ill-health as measured by years lived with disability. Often used synonymously with years lived with disability.

risk factor: Any factor that represents a greater risk of a health condition or health event.

years lived with disability (YLD): The number of years of what could have been a healthy life that were instead spent in states of less than full health. YLD represent non-fatal burden.

years of life lost (YLL): The number of years of life lost due to premature death, defined as dying before the ideal life span. YLL represent fatal burden.