An individual's or a population's overall level of health and wellbeing, taking into account various aspects such as life expectancy, amount of disability and levels of disease risk factors.
Life expectancy
An indication of how long a person can expect live, it is the number of years of life remaining to a person at a particular age if death rates do not change.
Morbidity
Refers to ill health in an individual and the levels of ill health in a population or group.
Mortality
The number of deaths in a population in a given period of time for a specific case/all cases.
Incidence
The number (or rate) of new cases of a disease/condition in a population during a given period.
Prevalence
The number or proportion of cases of a particular disease or condition present in a population at a given time.
YLD (Years Lost due to Disability
The number of healthy years lost due to disease, illness or injury.
YLL (Years of Life Lost)
Years of life lost due to premature death.
Disability adjusted life year (DALY)
Ameasure of burden of disease, one DALYequals one year of healthylifelost due to prematuredeath and time lived with illness, disease or injury.
Burden of Disease
A measure of the impact of diseases and injuries, specifically it measures the gapbetweencurrenthealthstatus and an idealsituation where everyonelives to an oldagefree of disease and disability. Is measuredin a unit called the DALY.
Self-assessed health status
A measure based on a person's own opinion about how they feel about their health and wellbeing, their state of mind and their life in general. It is commonly sourced from population surveys.
Core activity limitation
When an individual has difficulty, or requires assistance, with any of the three core activities.