Frequencies for first 10,000 rows of burn_care_unit_srvc_cd variable in pos2009 dataset :

  SRV: BURN |
  CARE UNIT |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,638       86.38       86.38
          0 |      1,295       12.95       99.33
          1 |         33        0.33       99.66
          2 |         29        0.29       99.95
          3 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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