Frequencies for first 10,000 rows of prov2090 variable in pos1994 dataset :

  srv: burn |
  care unit |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,940       89.40       89.40
          0 |        997        9.97       99.37
          1 |         24        0.24       99.61
          2 |         36        0.36       99.97
          3 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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