Frequencies for first 10,000 rows of lfdmon variable in natl1976 dataset :

    Date of |
 Last Fetal |
    Death - |
      Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        115        1.15        1.15
          2 |         99        0.99        2.14
          3 |        104        1.04        3.18
          4 |         76        0.76        3.94
          5 |         55        0.55        4.49
          6 |         77        0.77        5.26
          7 |         80        0.80        6.06
          8 |         86        0.86        6.92
          9 |         83        0.83        7.75
         10 |         90        0.90        8.65
         11 |         94        0.94        9.59
         12 |         82        0.82       10.41
         77 |      8,686       86.86       97.27
         99 |        273        2.73      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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