Frequencies for first 10,000 rows of term9 variable in natl1985 dataset :

   Interval |
      Since |
Termination |
    of Last |
  Pregnancy |
   Recode 9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,857       38.57       38.57
          1 |         95        0.95       39.52
          2 |        193        1.93       41.45
          3 |        802        8.02       49.47
          4 |        720        7.20       56.67
          5 |      1,208       12.08       68.75
          6 |        787        7.87       76.62
          7 |        543        5.43       82.05
          8 |      1,268       12.68       94.73
          9 |        527        5.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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