Frequencies for first 10,000 rows of prov1985 variable in pos1993 dataset :

        530 |
compatibili |
    ty test |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,797       87.97       87.97
          N |      1,147       11.47       99.44
          Y |         56        0.56      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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