Frequencies for first 10,000 rows of prov6195 variable in pos2006 dataset :

 srv: icu - |
   neonatal |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,710       87.10       87.10
          0 |      1,272       12.72       99.82
          1 |         17        0.17       99.99
          3 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016