Frequencies for first 10,000 rows of psychoth variable in namcs2004 dataset :

psychothera |
         py |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,566       95.66       95.66
          1 |        434        4.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016