Frequencies for first 10,000 rows of ilp_r11 variable in natl2014 dataset :

   Interval |
 Since Last |
  Pregnancy |
  Recode 11 |
 00 Zero to |
   3 months |
 (plural de |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        114        1.14        1.14
          1 |        312        3.12        4.26
          2 |        777        7.77       12.03
          3 |        842        8.42       20.45
          4 |      1,269       12.69       33.14
          5 |        703        7.03       40.17
          6 |        430        4.30       44.47
          7 |        274        2.74       47.21
          8 |        608        6.08       53.29
         88 |      2,848       28.48       81.77
         99 |      1,823       18.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Jun 2016