Frequencies for first 10,000 rows of physioth variable in namcs2002 dataset :

Physiothera |
         py |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,739       97.39       97.39
        Yes |        261        2.61      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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