Frequencies for first 10,000 rows of prov2225 variable in pos2001 dataset :

       srv: |
    medical |
   supplies |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,554       95.54       95.54
          0 |         22        0.22       95.76
          1 |        159        1.59       97.35
          2 |        264        2.64       99.99
          3 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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