Frequencies for first 10,000 rows of nlbnd variable in natl1985 dataset :

 Born alive |
 - now dead |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,777       97.77       97.77
          1 |        185        1.85       99.62
          2 |         28        0.28       99.90
          3 |          1        0.01       99.91
         99 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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