Frequencies for first 10,000 rows of ca_hypo variable in natlterr2010 dataset :

Hypospadias |
        RFP |
646=f_ca_hy |
      pos R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      4,656       46.56       46.56
          N |      4,369       43.69       90.25
          U |        973        9.73       99.98
          Y |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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