Frequencies for first 10,000 rows of psychoth variable in nhamcsopd2006 dataset :

psychothera |
         py |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,347       93.47       93.47
        Yes |        653        6.53      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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