what is the term for an epidemiological variable? different types of epidemiological variables what would be the term for the categorical variable for each patient what is the term for the categorical variable for each patient? define categorical variable when you set categorical variable $y for a patient what is the term for $y which variable is used to subset data? how to define epidemiological variable what is the term for an epidemiological variable how to subset epidemiology variables what is the term for the categorical variable what's the term for a variable in epidemiology what term is used for categorical variables how to do a subset in epidemiology what's the epidemiological term for variable $x$ what is the term for categorical variable what is the term epidemiological which is the term for categorical variable $x$? what is the term of epidemiological variables in data what is the term (preferably the epidemiological term) for each variable in a data set?