Frequencies for first 10,000 rows of prov2325 variable in pos1993 dataset :

       srv: |
orthotic/pr |
   osthetic |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,960       99.60       99.60
          0 |         22        0.22       99.82
          1 |          3        0.03       99.85
          2 |          7        0.07       99.92
          3 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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