Frequencies for first 10,000 rows of prov0905 variable in pos1992 dataset :

    special |
       care |
  beds-head |
     trauma |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,990       99.90       99.90
          1 |          4        0.04       99.94
          2 |          1        0.01       99.95
         20 |          1        0.01       99.96
         23 |          1        0.01       99.97
         72 |          1        0.01       99.98
         96 |          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