Frequencies for first 10,000 rows of ager5 variable in linkco1991us_num dataset :

 Infant Age |
   Recode 5 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,170       11.70       11.70
          2 |      2,674       26.74       38.44
          3 |      1,434       14.34       52.78
          4 |      1,107       11.07       63.85
          5 |      3,615       36.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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