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

   Services |
  Provided: |
    Nuclear |
   Medicine |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,614       86.14       86.14
          0 |        528        5.28       91.42
          1 |        581        5.81       97.23
          2 |        224        2.24       99.47
          3 |         53        0.53      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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