Frequencies for first 10,000 rows of burn_care_unit_srvc_cd variable in pos1999 dataset :

  srv: burn |
  care unit |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,885       88.85       88.85
          0 |      1,056       10.56       99.41
          1 |         27        0.27       99.68
          2 |         30        0.30       99.98
          3 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017