Frequencies for first 10,000 rows of dlmp_mm variable in natlterr2010 dataset :

Last Normal |
   Menses - |
  Month U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        435        4.35        4.35
          2 |        437        4.37        8.72
          3 |        528        5.28       14.00
          4 |      2,275       22.75       36.75
          5 |      1,236       12.36       49.11
          6 |        483        4.83       53.94
          7 |        448        4.48       58.42
          8 |        455        4.55       62.97
          9 |        470        4.70       67.67
         10 |        444        4.44       72.11
         11 |        464        4.64       76.75
         12 |        526        5.26       82.01
         99 |      1,799       17.99      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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