Frequencies for first 10,000 rows of adactyly variable in natl2002 dataset :

Polydactyly |
/Syndactyly |
  /Adactyly |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          8        0.08        0.08
          2 |      9,577       95.77       95.85
          9 |        415        4.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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