Frequencies for first 10,000 rows of prov2090 variable in pos1998 dataset :

  srv: burn |
  care unit |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,805       88.05       88.05
          0 |      1,128       11.28       99.33
          1 |         32        0.32       99.65
          2 |         33        0.33       99.98
          3 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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