Frequencies for first 10,000 rows of prov0560 variable in pos2002 dataset :

        hha |
  qualified |
    for opt |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,505       85.05       85.05
          N |      1,136       11.36       96.41
          Y |        359        3.59      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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