Table 1.

Glossary.

Term	Definition
Incidence	The rate at which new cases of a disease develop in the population at risk over a defined period of time.
Prevalence	Proportion of cases in the population at a given time. It is a function both of incidence and of duration, that is how long people with the disease remain in the population.
ADRD	Alzheimer's Disease and Related Dementias.
Neuroscience	Disciplines measuring the health of the central nervous system. It includes neuroimaging, psychology, neurobiology among others.
Population sciences	Disciplines studying the causes, manifestations and distribution of a disease in populations to uncover patterns, trends, and outcomes that may be applicable to the general population. Knowledge of population sciences is essential to design studies to identify groups of people who are at high risk for developing a certain condition and to implement, and assess approaches to effectively prevent disease and improve quality of life in the population.
Gerontology	Includes clinical and physiological processes of aging, such as diabetes, hypertension etc, as well as basic biological mechanisms, for example genomics, proteomics, metabolomics. Gerontologists can be researchers with clinical (medical, nursing, physical therapy degree) and/or research degrees (PhD, DrPh), or clinicians with expertise in ADRD (neurologists, psychiatrists).
Data science	A host of quantitative approaches, computational science, machine learning, regression tree algorithms, that produce risk models applied to biomedical problems. It includes computational biology, bioinformatics, mathematics, engineering, and biostatistics, among others.
Multi-morbidities	Coexistence of 1 or more chronic diseases (diabetes mellitus, stroke, hypertension, cancer, chronic obstructive pulmonary diseases, heart disease, osteoarthritis/ chronic pain) and/or risk factors (higher blood pressure/glucose, dyslipidemia, etc.).