Frequencies for first 10,000 rows of open_hrt_srgry_srvc_cd variable in pos2012

   Services |
  Provided: |
  Cardiac - |
   Thoracic |
      Surge |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,606       86.06       86.06
          0 |      1,115       11.15       97.21
          1 |        211        2.11       99.32
          2 |         46        0.46       99.78
          3 |         22        0.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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