Frequencies for first 10,000 rows of prov0560 variable in pos2006 dataset :

        hha |
  qualified |
    for opt |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,263       82.63       82.63
          N |      1,207       12.07       94.70
          Y |        530        5.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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