Frequencies for first 10,000 rows of form2 variable in namcs2000 dataset :

         is |
 medication |
  #2 from a |
  formulary |
      list? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        465        4.65        4.65
          1 |        949        9.49       14.14
          2 |      2,393       23.93       38.07
          3 |      6,193       61.93      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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