Frequencies for first 10,000 rows of prov2325 variable in pos2001 dataset :

       srv: |
orthotic/pr |
   osthetic |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,904       99.04       99.04
          0 |         71        0.71       99.75
          1 |          9        0.09       99.84
          2 |          7        0.07       99.91
          3 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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