Frequencies for first 10,000 rows of prov0455 variable in posclia1997 dataset :

   prov0455 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,558       75.58       75.58
          1 |      2,440       24.40       99.98
          2 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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