Frequencies for first 10,000 rows of form3 variable in namcs1997 dataset :

         is |
 medication |
  #3 from a |
  formulary |
      list? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        636        6.36        6.36
          1 |        520        5.20       11.56
          2 |      1,873       18.73       30.29
          3 |      6,971       69.71      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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