Frequencies for first 10,000 rows of phrmcy_srvc_cd variable in pos1996 dataset :

       srv: |
   pharmacy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,848       68.48       68.48
          0 |      1,200       12.00       80.48
          1 |      1,028       10.28       90.76
          2 |        841        8.41       99.17
          3 |         83        0.83      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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