Frequencies for intrdvx_ variable in fmli132 dataset :

   intrdvx_ |      Freq.     Percent        Cum.
------------+-----------------------------------
          A |      5,412       80.04       80.04
          C |        546        8.07       88.11
          D |        786       11.62       99.73
          T |         18        0.27      100.00
------------+-----------------------------------
      Total |      6,762      100.00

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