Frequencies for first 10,000 rows of nlbd variable in natl1975 dataset :

  Number of |
   children |
born dead ( |
      fetal |
   deaths ) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,618       96.18       96.18
          1 |        302        3.02       99.20
          2 |         39        0.39       99.59
          3 |         10        0.10       99.69
          4 |          2        0.02       99.71
          5 |          1        0.01       99.72
         55 |          1        0.01       99.73
         66 |          1        0.01       99.74
         77 |         25        0.25       99.99
         99 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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