Frequencies for first 10,000 rows of othercon variable in natlterr1995 dataset :

      Other |
 congenital |
  anomalies |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         39        0.39        0.39
          2 |      9,954       99.54       99.93
          9 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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