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.
Lyrica is the brand name for the generic drug Pregabalin. Pregabalin is categorized as a drug treatment for convulsions, partial seizures and general seizures. As further studies were conducted, Pregabalin was also found to be effective in treating generalized anxiety disorder.yrica is the brand name for the generic drug Pregabalin. Pregabalin is categorized as a drug treatment for convulsions, partial seizures and general seizures. As further studies were conducted, Pregabalin was also found to be effective in treating generalized anxiety disorder.