Frequencies for first 10,000 rows of apgar5r variable in natl2004 dataset :

Five Minute |
      Apgar |
 Recode U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         42        0.42        0.42
          2 |        110        1.10        1.52
          3 |      1,107       11.07       12.59
          4 |      8,663       86.63       99.22
          5 |         78        0.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 21 Jan 2016