Frequencies for first 10,000 rows of illb_r11 variable in natlterr2012 dataset :

   Interval |
 Since Last |
 Live Birth |
  Recode 11 |
RFP 571=? R |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         73        0.73        0.73
          1 |        103        1.03        1.76
          2 |        569        5.69        7.45
          3 |        574        5.74       13.19
          4 |        907        9.07       22.26
          5 |        616        6.16       28.42
          6 |        478        4.78       33.20
          7 |        338        3.38       36.58
          8 |      1,029       10.29       46.87
         88 |      3,435       34.35       81.22
         99 |        715        7.15       88.37
          . |      1,163       11.63      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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