Frequencies for first 10,000 rows of ilp_r11 variable in natl2016 dataset :

   Interval |
 Since Last |
  Pregnancy |
  Recode 11 |
 00 Zero to |
   3 months |
 (plural de |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        135        1.35        1.35
          1 |        352        3.52        4.87
          2 |        896        8.96       13.83
          3 |        936        9.36       23.19
          4 |      1,420       14.20       37.39
          5 |        721        7.21       44.60
          6 |        460        4.60       49.20
          7 |        301        3.01       52.21
          8 |        660        6.60       58.81
         88 |      2,744       27.44       86.25
         99 |      1,375       13.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 4 Oct 2017