Frequencies for first 10,000 rows of dlmp_mm variable in natlterr2014 dataset :

Last Normal |
     Menses |
   Month 01 |
    January |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        305        3.05        3.05
          2 |        388        3.88        6.93
          3 |        586        5.86       12.79
          4 |      2,539       25.39       38.18
          5 |      2,005       20.05       58.23
          6 |        508        5.08       63.31
          7 |        402        4.02       67.33
          8 |        312        3.12       70.45
          9 |        329        3.29       73.74
         10 |        349        3.49       77.23
         11 |        397        3.97       81.20
         12 |        371        3.71       84.91
         99 |      1,509       15.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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