Frequencies for first 10,000 rows of form6 variable in namcs1999 dataset :

         is |
 medication |
  #6 from a |
  formulary |
      list? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         71        0.71        0.71
          1 |        127        1.27        1.98
          2 |        242        2.42        4.40
          3 |      9,560       95.60      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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