Frequencies for first 10,000 rows of prov2365 variable in pos1992 dataset :

       srv: |
   pharmacy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,259       72.59       72.59
          0 |      1,055       10.55       83.14
          1 |        947        9.47       92.61
          2 |        664        6.64       99.25
          3 |         75        0.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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