Frequencies for first 10,000 rows of age_cod variable in demo2011q3 dataset :

       Unit |
abbreviatio |
      n for |
  patient's |
        age |      Freq.     Percent        Cum.
------------+-----------------------------------
        DEC |         16        0.16        0.16
         DY |         20        0.20        0.36
         HR |          1        0.01        0.37
        MON |         26        0.26        0.63
         WK |          4        0.04        0.67
         YR |      9,933       99.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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