Frequencies for first 10,000 rows of prov3545 variable in pos2009 dataset :

    CURRENT |
SURVEY EVER |
 ACCREDITED |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,649       86.49       86.49
          N |        381        3.81       90.30
          Y |        970        9.70      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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