Frequencies for first 10,000 rows of ca_cdh variable in natlterr2014 dataset :

 Congenital |
Diaphragmat |
ic Hernia Y |
        Yes |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,077       10.77       10.77
          N |      8,813       88.13       98.90
          U |        110        1.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Jun 2016