Frequencies for first 10,000 rows of dmar variable in natl1991 dataset :

    Marital |
  Status of |
     Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,960       69.60       69.60
          2 |      3,040       30.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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