Frequencies for first 10,000 rows of ager variable in nhamcsopd2002 dataset :

 age recode |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,881       18.81       18.81
          2 |      1,334       13.34       32.15
          3 |      2,864       28.64       60.79
          4 |      2,668       26.68       87.47
          5 |        739        7.39       94.86
          6 |        514        5.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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