Frequencies for first 10,000 rows of owner variable in nhamcsopd2002 dataset : hospital | ownership | Freq. Percent Cum. ------------+----------------------------------- 1 | 6,742 67.42 67.42 2 | 3,258 32.58 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016