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.
Generic Name: Olopatadine. Generic for Patanol* (Olopatadine) is an ophthalmic solution used to treat eye allergy symptoms such as itchy eyes, burning eyes, watery eyes, eye inflammation, and eye redness.It belongs to a class of medications called antihistamines.acts about Generic Drugs. 1  Generic drugs are chemically identical to brand-name drugs in terms of active ingredient(s), intended use, quality, dosage, safety, bioavailability and effectiveness. 2  Generic drugs are cheaper than brand-name drugs.