Categorical variables are also known as qualitative (or discrete) variables. These categorical variables can be further classified as being nominal, dichotomous or ordinal variables. Each of these types of categorical variable (i.e., nominal, dichotomous and ordinal) has what are known as categories or levels. These categories or levels are the descriptions that you give a variable that help to explain how variables should be measured, manipulated and/or controlled.
BetimolÂ® (timolol ophthalmic solution), 0.25% and 0.5%, is a non-selective beta-adrenergic antagonist for ophthalmic use. The chemical name of the active ingredient is (S)-1-[(1,1-dimethylethyl)amino]-3-[(4-(4-morpholinyl)-1,2,5-thiadiazol-3-yl]oxy]-2-propanol. Timolol hemihydrate is the levo isomer.
Bupropion is the generic or chemical name of the drug and Budeprion and Wellbutrin are brand names. Drugs can have both a generic name and a brand name. The FDA released a statement that the brand named medication; Budeprion XL 300 mg is not therapeutically equivalent to the brand named medication Wellbutrin XL 300 mg.This means that these two versions of bupropion XL 300 mg do not work the same when given to patients.he FDA does studies to make sure that all the different brands and generic formulations are the same. The FDA did the studies on the dose of bupropion XL 150 mg and concluded that all the manufacturers were making equivalent medications.