Frequencies for first 10,000 rows of prov0905 variable in pos1993 dataset :

    special |
       care |
  beds-head |
     trauma |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,996       99.96       99.96
          1 |          1        0.01       99.97
          2 |          1        0.01       99.98
         72 |          1        0.01       99.99
        136 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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