Frequencies for first 10,000 rows of ld_anti variable in natlterr2009 dataset :

Antibiotics |
        RFP |
612=f_ld_an |
    tibio R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      2,449       24.49       24.49
          N |      6,168       61.68       86.17
          U |          2        0.02       86.19
          Y |      1,381       13.81      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015