Frequencies for first 10,000 rows of prov3545 variable in pos1997 dataset :

    current |
survey ever |
 accredited |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,679       86.79       86.79
          N |        338        3.38       90.17
          Y |        983        9.83      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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