Frequencies for first 10,000 rows of chrprctic_srvc_cd variable in pos2003 dataset :

       srv: |
chiropracti |
          c |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,789       87.89       87.89
          0 |      1,174       11.74       99.63
          1 |         12        0.12       99.75
          2 |         20        0.20       99.95
          3 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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