Frequencies for first 10,000 rows of dlmp_mm variable in natlterr2007 dataset :

Last Normal |
   Menses - |
  Month U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        363        3.63        3.63
          2 |        409        4.09        7.72
          3 |        548        5.48       13.20
          4 |      2,854       28.54       41.74
          5 |      1,342       13.42       55.16
          6 |        448        4.48       59.64
          7 |        388        3.88       63.52
          8 |        401        4.01       67.53
          9 |        350        3.50       71.03
         10 |        352        3.52       74.55
         11 |        349        3.49       78.04
         12 |        392        3.92       81.96
         99 |      1,804       18.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015