Frequencies for first 10,000 rows of ld_fint variable in natlterr2008 dataset :

      Fetal |
Intolerance |
        RFP |
615=f_ld_fi |
     ntol R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,061       60.61       60.61
          N |      3,852       38.52       99.13
          Y |         87        0.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 May 2016