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

   Services |
  Provided: |
 Transplant |
     Center |
  (Medicare |
 Certified) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,614       86.14       86.14
          0 |      1,365       13.65       99.79
          1 |         15        0.15       99.94
          2 |          4        0.04       99.98
          3 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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