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

   Services |
  Provided: |
        ICU |
   Neonatal |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,614       86.14       86.14
          0 |      1,300       13.00       99.14
          1 |         71        0.71       99.85
          2 |          6        0.06       99.91
          3 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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