Frequencies for first 10,000 rows of orthtc_prsthtc_srvc_cd variable in pos2005 dataset :

       srv: |
orthotic/pr |
   osthetic |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,865       98.65       98.65
          0 |        108        1.08       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 , 17 May 2017