Frequencies for first 10,000 rows of nlbnl variable in natl1972 dataset :

 Born alive |
      - now |
     living |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,276       42.76       42.76
          1 |      2,740       27.40       70.16
          2 |      1,393       13.93       84.09
          3 |        687        6.87       90.96
          4 |        329        3.29       94.25
          5 |        196        1.96       96.21
          6 |        114        1.14       97.35
          7 |         73        0.73       98.08
          8 |         49        0.49       98.57
          9 |         42        0.42       98.99
         10 |         25        0.25       99.24
         11 |         12        0.12       99.36
         12 |         10        0.10       99.46
         13 |          3        0.03       99.49
         14 |          1        0.01       99.50
         55 |          1        0.01       99.51
         66 |          1        0.01       99.52
         77 |         20        0.20       99.72
         99 |         28        0.28      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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