Frequencies for first 10,000 rows of srvy_ever_acrdtd_sw variable in pos2007 dataset :

    current |
survey ever |
 accredited |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,693       86.93       86.93
          N |        344        3.44       90.37
          Y |        963        9.63      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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