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

      Spina |
   Bifida / |
Meningocele |
  1 Anomaly |
   reported |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          2        0.02        0.02
          2 |      8,811       88.11       88.13
          9 |      1,187       11.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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