Frequencies for first 10,000 rows of prov1885 variable in pos1995 dataset :

        110 |
bacteriolog |
          y |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,884       88.84       88.84
          N |        599        5.99       94.83
          Y |        517        5.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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