Frequencies for first 10,000 rows of age_cod variable in demo2007q2 dataset :

       Unit |
abbreviatio |
      n for |
  patient's |
        age |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      4,096       40.96       40.96
        DEC |         25        0.25       41.21
         DY |        115        1.15       42.36
         HR |          1        0.01       42.37
        MON |        100        1.00       43.37
         WK |          7        0.07       43.44
         YR |      5,656       56.56      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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