Frequencies for first 10,000 rows of age_cod variable in demo2008q4 dataset :

       Unit |
abbreviatio |
      n for |
  patient's |
        age |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      4,870       48.70       48.70
        DEC |          6        0.06       48.76
         DY |         46        0.46       49.22
         HR |          1        0.01       49.23
        MON |         75        0.75       49.98
         WK |          4        0.04       50.02
         YR |      4,998       49.98      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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