Frequencies for econds_20 variable in linkco1995us_unl dataset :

Sequence of |
  condition |
     within |
  part/line |
         20 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        708      100.00      100.00
------------+-----------------------------------
      Total |        708      100.00

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