Frequencies for first 10,000 rows of age_cod variable in demo2007q3 dataset :

       Unit |
abbreviatio |
      n for |
  patient's |
        age |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      3,735       37.35       37.35
        DEC |         21        0.21       37.56
         DY |         85        0.85       38.41
         HR |          5        0.05       38.46
        MON |        114        1.14       39.60
         WK |          5        0.05       39.65
         YR |      6,035       60.35      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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