Frequencies for qintrvmo variable in fmli132 dataset :

   qintrvmo |      Freq.     Percent        Cum.
------------+-----------------------------------
         04 |      2,300       34.01       34.01
         05 |      2,292       33.90       67.91
         06 |      2,170       32.09      100.00
------------+-----------------------------------
      Total |      6,762      100.00

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