Frequencies for first 10,000 rows of f_u_primc variable in natlterr2011 dataset :

    Primary |
  C-Section |
(ume_primc) |
          U |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |     10,000      100.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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