Frequencies for first 10,000 rows of mm_aicu variable in natlterr2015 dataset :

   Admit to |
  Intensive |
 Care Y Yes |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,078       10.78       10.78
          N |      8,756       87.56       98.34
          U |        162        1.62       99.96
          Y |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Oct 2016