Frequencies for first 10,000 rows of ld_anti variable in natlterr2007 dataset :

Antibiotics |
        RFP |
612=f_ld_an |
    tibio R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,163       61.63       61.63
          N |      3,365       33.65       95.28
          U |          1        0.01       95.29
          Y |        471        4.71      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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