Frequencies for first 10,000 rows of prov1985 variable in pos1991 dataset :

        530 |
compatibili |
    ty test |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,536       85.36       85.36
          N |      1,403       14.03       99.39
          Y |         61        0.61      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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