Some key demographic variables include: 1. Age: Age is a fundamental variable as it is closely associated with the prevalence of many diseases. 2. Gender: Gender differences can influence disease risk and health behaviors. 3. Ethnicity/Race: Ethnic and racial background can affect genetic susceptibility to diseases and access to healthcare. 4. Socioeconomic Status (SES): SES impacts health outcomes through factors like access to care, education, and living conditions. 5. Geographic Location: Geographic variables can highlight regional disparities in health outcomes and disease prevalence.
