Frequencies for first 10,000 rows of ca_mnsb variable in natl2011 dataset :

Meningomyel |
ocele/Spina |
 Bifida RFP |
636=f_ca_me |
      nin R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |     10,000      100.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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