Frequencies for first 10,000 rows of lfdyr variable in natl1988 dataset :

    Date of |
 Last Fetal |
    Death - |
       Year |      Freq.     Percent        Cum.
------------+-----------------------------------
         70 |          2        0.02        0.02
         71 |          2        0.02        0.04
         72 |          6        0.06        0.10
         73 |          5        0.05        0.15
         74 |         11        0.11        0.26
         75 |          9        0.09        0.35
         76 |         20        0.20        0.55
         77 |      8,168       81.68       82.23
         78 |         29        0.29       82.52
         79 |         23        0.23       82.75
         80 |         41        0.41       83.16
         81 |         37        0.37       83.53
         82 |         56        0.56       84.09
         83 |         79        0.79       84.88
         84 |        102        1.02       85.90
         85 |        191        1.91       87.81
         86 |        341        3.41       91.22
         87 |        230        2.30       93.52
         99 |        648        6.48      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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