Frequencies for first 10,000 rows of ager variable in nhamcsed2004 dataset :

       age recode |      Freq.     Percent        Cum.
------------------+-----------------------------------
   under 15 years |      1,773       17.73       17.73
      15-24 years |      1,613       16.13       33.86
      25-44 years |      3,055       30.55       64.41
      45-64 years |      2,020       20.20       84.61
      65-74 years |        620        6.20       90.81
75 years and over |        919        9.19      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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