Frequencies for first 10,000 rows of prov0905 variable in pos1991 dataset :

    special |
       care |
  beds-head |
     trauma |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,997       99.97       99.97
          1 |          1        0.01       99.98
          2 |          1        0.01       99.99
         72 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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