Frequencies for first 10,000 rows of prov0560 variable in pos1995 dataset :

        hha |
  qualified |
    for opt |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,740       87.40       87.40
          N |        985        9.85       97.25
          Y |        275        2.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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