Frequencies for first 10,000 rows of priorlive variable in natl2005 dataset :

      Prior |
 Births Now |
 Living U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,795       37.95       37.95
          1 |      2,988       29.88       67.83
          2 |      1,654       16.54       84.37
          3 |        804        8.04       92.41
          4 |        367        3.67       96.08
          5 |        186        1.86       97.94
          6 |         86        0.86       98.80
          7 |         45        0.45       99.25
          8 |         29        0.29       99.54
          9 |         13        0.13       99.67
         10 |          4        0.04       99.71
         11 |          2        0.02       99.73
         12 |          6        0.06       99.79
         15 |          1        0.01       99.80
         99 |         20        0.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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