Frequencies for first 10,000 rows of illb_r11 variable in natl2013 dataset :

   Interval |
 Since Last |
 Live Birth |
  Recode 11 |
RFP 571=? R |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        127        1.27        1.27
          1 |         82        0.82        2.09
          2 |        518        5.18        7.27
          3 |        776        7.76       15.03
          4 |      1,477       14.77       29.80
          5 |        895        8.95       38.75
          6 |        527        5.27       44.02
          7 |        358        3.58       47.60
          8 |        822        8.22       55.82
         88 |      3,645       36.45       92.27
         99 |        773        7.73      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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