Frequencies for first 10,000 rows of dmar variable in natl1990 dataset :

    Marital |
  Status of |
     Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,049       70.49       70.49
          2 |      2,951       29.51      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016