Frequencies for first 10,000 rows of prov1575 variable in pos2006 dataset :

participati |
    ng code |
      (y,n) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,621       86.21       86.21
          N |         89        0.89       87.10
          Y |      1,290       12.90      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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