Frequencies for first 10,000 rows of ager variable in nhamcsed2009 dataset :

 age recode |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,052       20.52       20.52
          2 |      1,452       14.52       35.04
          3 |      2,816       28.16       63.20
          4 |      2,220       22.20       85.40
          5 |        621        6.21       91.61
          6 |        839        8.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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