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

   Services |
  Provided: |
  Cardiac - |
   Thoracic |
    Surgery |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,614       86.14       86.14
          0 |      1,109       11.09       97.23
          1 |        213        2.13       99.36
          2 |         45        0.45       99.81
          3 |         19        0.19      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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