Frequencies for first 10,000 rows of ager variable in nhamcsed2005 dataset :

       age recode |      Freq.     Percent        Cum.
------------------+-----------------------------------
   under 15 years |      2,027       20.27       20.27
      15-24 years |      1,588       15.88       36.15
      25-44 years |      2,926       29.26       65.41
      45-64 years |      2,101       21.01       86.42
      65-74 years |        594        5.94       92.36
75 years and over |        764        7.64      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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