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

       srv: |
    medical |
   supplies |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,439       94.39       94.39
          0 |         27        0.27       94.66
          1 |        183        1.83       96.49
          2 |        348        3.48       99.97
          3 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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