Frequencies for first 10,000 rows of dlmp_dd variable in natl2008 dataset :

Last Normal |
   Menses - |
    Day U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        621        6.21        6.21
          2 |        233        2.33        8.54
          3 |        206        2.06       10.60
          4 |        225        2.25       12.85
          5 |        367        3.67       16.52
          6 |        222        2.22       18.74
          7 |        248        2.48       21.22
          8 |        249        2.49       23.71
          9 |        196        1.96       25.67
         10 |        414        4.14       29.81
         11 |        206        2.06       31.87
         12 |        283        2.83       34.70
         13 |        277        2.77       37.47
         14 |        247        2.47       39.94
         15 |        568        5.68       45.62
         16 |        261        2.61       48.23
         17 |        266        2.66       50.89
         18 |        244        2.44       53.33
         19 |        210        2.10       55.43
         20 |        427        4.27       59.70
         21 |        244        2.44       62.14
         22 |        181        1.81       63.95
         23 |        245        2.45       66.40
         24 |        198        1.98       68.38
         25 |        402        4.02       72.40
         26 |        246        2.46       74.86
         27 |        246        2.46       77.32
         28 |        288        2.88       80.20
         29 |        160        1.60       81.80
         30 |        277        2.77       84.57
         31 |         63        0.63       85.20
         99 |      1,480       14.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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