Frequencies for first 10,000 rows of rf_cesar variable in natl2015 dataset :

   Previous |
 Cesarean Y |
        Yes |      Freq.     Percent        Cum.
------------+-----------------------------------
          N |      8,755       87.55       87.55
          U |        108        1.08       88.63
          Y |      1,137       11.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Oct 2016