Frequencies for first 10,000 rows of nuclr_mdcn_srvc_cd variable in pos2012 dat

   Services |
  Provided: |
    Nuclear |
   Medicine |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,606       86.06       86.06
          0 |        536        5.36       91.42
          1 |        580        5.80       97.22
          2 |        219        2.19       99.41
          3 |         59        0.59      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016