Frequencies for first 10,000 rows of psychoth variable in namcs2011 dataset :

Psychothera |
         py |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,902       99.02       99.02
        Yes |         98        0.98      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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