Frequencies for first 10,000 rows of prov2365 variable in pos1995 dataset :

       srv: |
   pharmacy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,225       72.25       72.25
          0 |      1,057       10.57       82.82
          1 |        938        9.38       92.20
          2 |        707        7.07       99.27
          3 |         73        0.73      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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