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

Polydactyly |
/Syndactyly |
  /Adactyly |
        RFP |
767=f_uca_a |
   dactyl U |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          1        0.01        0.01
          2 |      4,783       47.83       47.84
          9 |      1,491       14.91       62.75
          . |      3,725       37.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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