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

   Services |
  Provided: |
    Cardiac |
Catheteriza |
   tion Lab |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,614       86.14       86.14
          0 |      1,240       12.40       98.54
          1 |        115        1.15       99.69
          2 |         17        0.17       99.86
          3 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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