Frequencies for first 10,000 rows of otc variable in nadac20160831 dataset : Over-the-co | unter (OTC) | Product | ('Y' or | 'N') | Freq. Percent Cum. ------------+----------------------------------- N | 8,733 87.33 87.33 Y | 1,267 12.67 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 10 Feb 2018