Frequencies for first 10,000 rows of prov3545 variable in pos1992 dataset :

    current |
survey ever |
 accredited |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,738       87.38       87.38
          N |        301        3.01       90.39
          Y |        961        9.61      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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