Frequencies for first 10,000 rows of rf_cesarn variable in natlterr2012 dataset :

  Number of |
   Previous |
   Cesarean |
 Deliveries |
 RFP 594= R |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,645       76.45       76.45
          1 |        764        7.64       84.09
          2 |        203        2.03       86.12
          3 |         20        0.20       86.32
          4 |          3        0.03       86.35
         99 |        202        2.02       88.37
          . |      1,163       11.63      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 5 May 2016