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

       srv: |
chiropracti |
          c |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,731       87.31       87.31
          0 |      1,227       12.27       99.58
          1 |         17        0.17       99.75
          2 |         22        0.22       99.97
          3 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017