Frequencies for first 10,000 rows of nlbnl variable in natl1978 dataset :

 Born alive |
      - now |
     living |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,328       43.28       43.28
          1 |      3,204       32.04       75.32
          2 |      1,446       14.46       89.78
          3 |        528        5.28       95.06
          4 |        210        2.10       97.16
          5 |        123        1.23       98.39
          6 |         62        0.62       99.01
          7 |         32        0.32       99.33
          8 |         29        0.29       99.62
          9 |         13        0.13       99.75
         10 |          9        0.09       99.84
         11 |          4        0.04       99.88
         12 |          2        0.02       99.90
         13 |          2        0.02       99.92
         14 |          3        0.03       99.95
         15 |          1        0.01       99.96
         16 |          1        0.01       99.97
         99 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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