Frequencies for first 10,000 rows of age_cod variable in demo2015q3 dataset :

       Unit |
abbreviatio |
      n for |
  patient's |
        age |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      2,278       22.78       22.78
        DEC |          5        0.05       22.83
         DY |         37        0.37       23.20
        MON |         38        0.38       23.58
         WK |          1        0.01       23.59
         YR |      7,641       76.41      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 6 Apr 2017