Frequencies for first 10,000 rows of nuclr_mdcn_srvc_cd variable in pos2008 dataset :

       srv: |
    nuclear |
   medicine |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,655       86.55       86.55
          0 |        502        5.02       91.57
          1 |        583        5.83       97.40
          2 |        222        2.22       99.62
          3 |         38        0.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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