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

  Services: |
    Cardiac |
   Thoracic |
    Surgery |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,560       85.60       85.60
          0 |      1,153       11.53       97.13
          1 |        208        2.08       99.21
          2 |         43        0.43       99.64
          3 |         36        0.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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