Frequencies for first 10,000 rows of prov2325 variable in pos2004 dataset :

       srv: |
orthotic/pr |
   osthetic |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,869       98.69       98.69
          0 |        104        1.04       99.73
          1 |          9        0.09       99.82
          2 |          7        0.07       99.89
          3 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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