Frequencies for first 10,000 rows of othther variable in nhamcsopd1996 dataset : other | therapy | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,845 98.45 98.45 1 | 155 1.55 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016