Frequencies for first 10,000 rows of epnmom variable in sippp08putm1 dataset :

  PE: Person number of |
                mother |      Freq.     Percent        Cum.
-----------------------+-----------------------------------
                   101 |      1,914       19.14       19.14
                   102 |      1,085       10.85       29.99
                   103 |         92        0.92       30.91
                   104 |         46        0.46       31.37
                   105 |         21        0.21       31.58
                   106 |         10        0.10       31.68
                   107 |          2        0.02       31.70
                   108 |          1        0.01       31.71
No mother in household |      6,829       68.29      100.00
-----------------------+-----------------------------------
                 Total |     10,000      100.00

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