Frequencies for first 10,000 rows of mdcl_suply_srvc_cd variable in pos2011 dataset :

   Service: |
    Medical |
   Supplies |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,342       93.42       93.42
          0 |         30        0.30       93.72
          1 |        213        2.13       95.85
          2 |        408        4.08       99.93
          3 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Apr 2019