Frequencies for first 10,000 rows of prov2365 variable in pos1993 dataset :

       srv: |
   pharmacy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,334       73.34       73.34
          0 |        960        9.60       82.94
          1 |        961        9.61       92.55
          2 |        678        6.78       99.33
          3 |         67        0.67      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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