Frequencies for first 10,000 rows of ca_cchd variable in natlterr2006 dataset :

   Cyanotic |
 Congenital |
      Heart |
Disease RFP |
637=f_ca_he |
      art R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,275       62.75       62.75
          N |      3,723       37.23       99.98
          Y |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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