Frequencies for first 10,000 rows of age_cod variable in demo2005q1 dataset :

       Unit |
abbreviatio |
      n for |
  patient's |
        age |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      2,846       28.46       28.46
        DEC |          6        0.06       28.52
         DY |         32        0.32       28.84
         HR |          2        0.02       28.86
        MON |         38        0.38       29.24
         WK |         16        0.16       29.40
         YR |      7,060       70.60      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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