Frequencies for first 10,000 rows of vaginal variable in natl2001 dataset :

    Vaginal |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,213       72.13       72.13
          2 |      2,748       27.48       99.61
          8 |          1        0.01       99.62
          9 |         38        0.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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