Frequencies for first 10,000 rows of ager variable in nhamcsed2013 dataset :

       Age recode |      Freq.     Percent        Cum.
------------------+-----------------------------------
   Under 15 years |      1,975       19.75       19.75
      15-24 years |      1,347       13.47       33.22
      25-44 years |      2,894       28.94       62.16
      45-64 years |      2,428       24.28       86.44
      65-74 years |        574        5.74       92.18
75 years and over |        782        7.82      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016