Frequencies for first 10,000 rows of prov1890 variable in pos1991 dataset :

       110c |
mycobacteri |
      ology |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,536       85.36       85.36
          N |      1,448       14.48       99.84
          Y |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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