Frequencies for first 10,000 rows of mdcl_suply_srvc_cd variable in pos1994 dataset :

       srv: |
    medical |
   supplies |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,762       97.62       97.62
          0 |         13        0.13       97.75
          1 |         90        0.90       98.65
          2 |        134        1.34       99.99
          3 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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