Frequencies for first 10,000 rows of nlbnl variable in natl1977 dataset :

 Born alive |
      - now |
     living |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,371       43.71       43.71
          1 |      3,105       31.05       74.76
          2 |      1,413       14.13       88.89
          3 |        585        5.85       94.74
          4 |        226        2.26       97.00
          5 |        119        1.19       98.19
          6 |         68        0.68       98.87
          7 |         46        0.46       99.33
          8 |         27        0.27       99.60
          9 |         13        0.13       99.73
         10 |         15        0.15       99.88
         11 |          3        0.03       99.91
         12 |          1        0.01       99.92
         14 |          1        0.01       99.93
         15 |          1        0.01       99.94
         66 |          1        0.01       99.95
         77 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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