Frequencies for first 10,000 rows of hha_qlfyd_opt_spch_sw variable in pos1996 dataset :

        hha |
  qualified |
    for opt |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,548       85.48       85.48
          N |      1,094       10.94       96.42
          Y |        358        3.58      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017