Frequencies for first 10,000 rows of uca_cleftlp variable in natl2011 dataset :

      Cleft |
 Lip/Palate |
        RFP |
766=f_uca_c |
 leftlp U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         11        0.11        0.11
          2 |      7,792       77.92       78.03
          9 |      2,197       21.97      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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