Frequencies for first 10,000 rows of phrmcy_srvc_cd variable in pos2002 dataset :

       srv: |
   pharmacy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,529       65.29       65.29
          0 |      1,203       12.03       77.32
          1 |      1,042       10.42       87.74
          2 |      1,113       11.13       98.87
          3 |        113        1.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017