Frequencies for first 10,000 rows of prov0905 variable in pos2009 dataset :

    SPECIAL |
       CARE |
  BEDS-HEAD |
     TRAUMA |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |     10,000      100.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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