Frequencies for first 10,000 rows of dlmp_mm variable in natlterr2015 dataset :

Last Normal |
     Menses |
   Month 01 |
    January |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        342        3.42        3.42
          2 |        341        3.41        6.83
          3 |        590        5.90       12.73
          4 |      2,412       24.12       36.85
          5 |      2,092       20.92       57.77
          6 |        578        5.78       63.55
          7 |        370        3.70       67.25
          8 |        381        3.81       71.06
          9 |        336        3.36       74.42
         10 |        319        3.19       77.61
         11 |        334        3.34       80.95
         12 |        417        4.17       85.12
         99 |      1,488       14.88      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Oct 2016