Frequencies for first 10,000 rows of prov2365 variable in pos1998 dataset :

       srv: |
   pharmacy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,812       68.12       68.12
          0 |      1,131       11.31       79.43
          1 |      1,027       10.27       89.70
          2 |        943        9.43       99.13
          3 |         87        0.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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