Epidemiology, Tobacco, Alcohol, Drugs

The consideration of race and/or ethnic origin as variables in disease incident, transmission, and control.

The consideration of occupation as a variable in disease incident, transmission, and control.

The consideration of geographic location as a variable in disease incident, transmission, and control.

Population-based studies that describe trends and associations between risk factors, habits, and a specific chronic disease, such as cancer.

The consideration of age and sex as variables in disease incident, transmission, and control.

The study of human populations to identify causes of disease and factors determining and influencing the frequency and distribution of disease, injury,…