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

  Suspected |
Chromosonal |
   Disorder |
        RFP |
645=f_ca_ch |
      rom R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,275       62.75       62.75
          N |      3,722       37.22       99.97
          P |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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