Frequencies for first 10,000 rows of prov3555 variable in pos2004 dataset :

    current |
survey ever |
 non-accred |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,766       87.66       87.66
          N |        920        9.20       96.86
          Y |        314        3.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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