Frequencies for first 10,000 rows of prov2365 variable in pos1997 dataset :

       srv: |
   pharmacy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,877       68.77       68.77
          0 |      1,111       11.11       79.88
          1 |      1,031       10.31       90.19
          2 |        898        8.98       99.17
          3 |         83        0.83      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016