Frequencies for first 10,000 rows of prov3555 variable in pos1995 dataset :

    current |
survey ever |
 non-accred |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,832       88.32       88.32
          N |        880        8.80       97.12
          Y |        288        2.88      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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