Frequencies for first 10,000 rows of nlbnl variable in natl1970 dataset :

 Born alive |
      - now |
     living |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,118       41.18       41.18
          1 |      2,616       26.16       67.34
          2 |      1,408       14.08       81.42
          3 |        758        7.58       89.00
          4 |        402        4.02       93.02
          5 |        202        2.02       95.04
          6 |        143        1.43       96.47
          7 |         97        0.97       97.44
          8 |         83        0.83       98.27
          9 |         53        0.53       98.80
         10 |         30        0.30       99.10
         11 |         18        0.18       99.28
         12 |         14        0.14       99.42
         13 |          4        0.04       99.46
         14 |          3        0.03       99.49
         15 |          1        0.01       99.50
         16 |          1        0.01       99.51
         17 |          1        0.01       99.52
         20 |          1        0.01       99.53
         55 |          6        0.06       99.59
         77 |         38        0.38       99.97
         99 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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