Frequencies for first 10,000 rows of nlbnl variable in natl1981 dataset :

 Born alive |
      - now |
     living |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,446       44.46       44.46
          1 |      3,149       31.49       75.95
          2 |      1,406       14.06       90.01
          3 |        570        5.70       95.71
          4 |        217        2.17       97.88
          5 |         84        0.84       98.72
          6 |         52        0.52       99.24
          7 |         33        0.33       99.57
          8 |         18        0.18       99.75
          9 |          8        0.08       99.83
         10 |          6        0.06       99.89
         11 |          3        0.03       99.92
         12 |          2        0.02       99.94
         19 |          1        0.01       99.95
         99 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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