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

      Cleft |
 Lip/Palate |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          5        0.05        0.05
          2 |      8,243       82.43       82.48
          9 |      1,752       17.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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