Frequencies for irayrx_ variable in fmli132 dataset :

    irayrx_ |      Freq.     Percent        Cum.
------------+-----------------------------------
          A |      5,425       80.23       80.23
          C |        247        3.65       83.88
          D |      1,081       15.99       99.87
          T |          9        0.13      100.00
------------+-----------------------------------
      Total |      6,762      100.00

by Jean Roth , jroth@nber.org , 17 Mar 2016