Frequencies for first 10,000 rows of term9 variable in natl1982 dataset :

   Interval |
      Since |
Termination |
    of Last |
  Pregnancy |
   Recode 9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,765       37.65       37.65
          1 |         91        0.91       38.56
          2 |        175        1.75       40.31
          3 |        876        8.76       49.07
          4 |        837        8.37       57.44
          5 |      1,257       12.57       70.01
          6 |        757        7.57       77.58
          7 |        502        5.02       82.60
          8 |      1,316       13.16       95.76
          9 |        424        4.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016