Chapter 2

• Health status: an individual's or population's overall health
• Self-assessed health status: an overall measure of a population's health, based on a person's own perceptions of their health
• Life expectancy: an indication of how long a person can expect to live
• Mortality: the number of deaths caused by a particular disease, illness or other environmental factors
• Morbidity: refers to ill-health in an individual and the levels of ill-health in a population or group
• Rates of hospitalisation: the number of patients who experience an episode of admitted patient care
• Psychological distress: refers to an individual's overall level of psychological strain or pain and interferes with their ability to perform daily activities
• Core activity limitation: refers to needing assistance with self-care, mobility and/or communication
• Disability: An impairment of a body structure or function that results in a limitation in activities or a restriction in participation
• Burden of disease: a measure of the impact of disease and injury. Specifically, it measures the gap between the current health status and the ideal situation where everyone lives to an old age free of disease or disability measured by DALY
• DALYs (disability adjusted life years): a measure of the burden of disease. One DALY equals one year of healthy life lost due to pre-mature death and time lived with illness, disease or injury
• YLL (years of life lost): the fatal burden of disease of a population, defined as years of life lost due to death
• YLD (years of life lost due to disability): the non-fatal component of the disease burden; a measurement of the healthy years lost due to disease, illness or injury
• Incidence: the number or rate of new cases of a particular condition during a specific time
• Prevalence: the number or proportion of cases of a particular disease or condition present in a population at a given time