Frequencies for first 10,000 rows of rf_cesarn variable in natlterr2010 dataset :

  Number of |
   Previous |
   Cesarean |
 Deliveries |
        RFP |
594=f_rf_nc |
     esar R |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,700       37.00       37.00
          1 |        722        7.22       44.22
          2 |        149        1.49       45.71
          3 |          9        0.09       45.80
         99 |        764        7.64       53.44
          . |      4,656       46.56      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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