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

  Services: |
   Neonatal |
   ICU Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,560       85.60       85.60
          0 |      1,276       12.76       98.36
          1 |        125        1.25       99.61
          2 |          7        0.07       99.68
          3 |         32        0.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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