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

   Services |
  Provided: |
        ICU |
  Pediatric |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,614       86.14       86.14
          0 |      1,332       13.32       99.46
          1 |         40        0.40       99.86
          2 |          8        0.08       99.94
          3 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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