Frequencies for first 10,000 rows of prov1575 variable in pos1995 dataset :

participati |
    ng code |
      (y,n) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,831       88.31       88.31
          N |         96        0.96       89.27
          Y |      1,073       10.73      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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