Frequencies for first 10,000 rows of prov2090 variable in pos1997 dataset :

  srv: burn |
  care unit |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,792       87.92       87.92
          0 |      1,137       11.37       99.29
          1 |         35        0.35       99.64
          2 |         34        0.34       99.98
          3 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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