Frequencies for first 10,000 rows of ume_vag variable in natlterr2005 dataset :

Vaginal U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,333       33.33       33.33
          2 |      1,181       11.81       45.14
          9 |      1,741       17.41       62.55
          . |      3,745       37.45      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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