Frequencies for first 10,000 rows of ager variable in nhamcsed2010 dataset :

       Age recode |      Freq.     Percent        Cum.
------------------+-----------------------------------
   under 15 years |      1,835       18.35       18.35
      15-24 years |      1,629       16.29       34.64
      25-44 years |      2,842       28.42       63.06
      45-64 years |      2,169       21.69       84.75
      65-74 years |        652        6.52       91.27
75 years and over |        873        8.73      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016