Frequencies for first 10,000 rows of omaps variable in natl1994 dataset :

 One Minute |
Apgar Score |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          3        0.03        0.03
          1 |         59        0.59        0.62
          2 |         60        0.60        1.22
          3 |         68        0.68        1.90
          4 |         84        0.84        2.74
          5 |        165        1.65        4.39
          6 |        224        2.24        6.63
          7 |        659        6.59       13.22
          8 |      4,207       42.07       55.29
          9 |      4,316       43.16       98.45
         10 |        122        1.22       99.67
         99 |         33        0.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015