Frequencies for first 10,000 rows of age_cod variable in demo2006q2 dataset :

       Unit |
abbreviatio |
      n for |
  patient's |
        age |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      2,846       28.46       28.46
        DEC |         10        0.10       28.56
         DY |         76        0.76       29.32
         HR |          3        0.03       29.35
        MON |         64        0.64       29.99
         WK |          1        0.01       30.00
         YR |      7,000       70.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Dec 2015