Frequencies for first 10,000 rows of lfdmon variable in natl1987 dataset :

    Date of |
 Last Fetal |
    Death - |
      Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        144        1.44        1.44
          2 |        106        1.06        2.50
          3 |        126        1.26        3.76
          4 |         84        0.84        4.60
          5 |         68        0.68        5.28
          6 |         78        0.78        6.06
          7 |         75        0.75        6.81
          8 |         74        0.74        7.55
          9 |         84        0.84        8.39
         10 |         73        0.73        9.12
         11 |         81        0.81        9.93
         12 |         97        0.97       10.90
         77 |      8,217       82.17       93.07
         99 |        693        6.93      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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