Frequencies for first 10,000 rows of casemix variable in psfhos dataset :

   Case Mix |
      Index |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,894       98.94       98.94
      .0001 |         82        0.82       99.76
      .0007 |         17        0.17       99.93
          1 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 24 Sep 2018