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

         No |
 Congenital |
  Anomalies |
  Checked 1 |
       True |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         22        0.22        0.22
          1 |      8,791       87.91       88.13
          9 |        110        1.10       89.23
          . |      1,077       10.77      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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