Frequencies for first 10,000 rows of owner variable in nhamcsopd2001 dataset : hospital | ownership | Freq. Percent Cum. ------------+----------------------------------- 1 | 7,635 76.35 76.35 2 | 2,365 23.65 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016