Frequencies for first 10,000 rows of prov0455 variable in posclia2008 dataset :

eligibility |
       code |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,776       77.76       77.76
          1 |      2,224       22.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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