Frequencies for first 10,000 rows of psychoth variable in namcs2015 dataset : Psychothera | py | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,799 97.99 97.99 1 | 201 2.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 25 Oct 2017