Frequencies for first 10,000 rows of vet4 variable in morg05 dataset :

          Veteran, when did you serve 4 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                      . |     10,000      100.00      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Mar 2017