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

  Number of |
   Previous |
   Cesarean |
 Deliveries |
        RFP |
594=f_rf_nc |
     esar R |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,551       55.51       55.51
          1 |        690        6.90       62.41
          2 |        155        1.55       63.96
          3 |         16        0.16       64.12
         99 |      1,052       10.52       74.64
          . |      2,536       25.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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