Frequencies for first 10,000 rows of neontl_icu_srvc_cd variable in pos2005 dataset :

 srv: icu - |
   neonatal |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,731       87.31       87.31
          0 |      1,260       12.60       99.91
          1 |          8        0.08       99.99
          2 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017