Frequencies for first 10,000 rows of prov1885 variable in pos1993 dataset :

        110 |
bacteriolog |
          y |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,797       87.97       87.97
          N |        640        6.40       94.37
          Y |        563        5.63      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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