Frequencies for first 10,000 rows of therprev variable in nhamcsopd2002 dataset :

        was |
couns/educ/ |
    therapy |
 ordered or |
  provided? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,981       49.81       49.81
          1 |      4,802       48.02       97.83
          2 |        217        2.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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