Frequencies for first 10,000 rows of prov2090 variable in pos2006 dataset :

  srv: burn |
  care unit |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,710       87.10       87.10
          0 |      1,228       12.28       99.38
          1 |         33        0.33       99.71
          2 |         25        0.25       99.96
          3 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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