Frequencies for first 10,000 rows of nuclr_mdcn_srvc_cd variable in pos2018 dataset :

  Services: |
    Nuclear |
   Medicine |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,560       85.60       85.60
          0 |        571        5.71       91.31
          1 |        564        5.64       96.95
          2 |        230        2.30       99.25
          3 |         75        0.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Feb 2019