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

 Born alive |
      - now |
     living |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,437       44.37       44.37
          1 |      3,304       33.04       77.41
          2 |      1,462       14.62       92.03
          3 |        504        5.04       97.07
          4 |        164        1.64       98.71
          5 |         70        0.70       99.41
          6 |         29        0.29       99.70
          7 |         13        0.13       99.83
          8 |          4        0.04       99.87
          9 |          3        0.03       99.90
         10 |          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