Frequencies for first 10,000 rows of age_cod variable in demo2007q1 dataset :

       Unit |
abbreviatio |
      n for |
  patient's |
        age |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      3,661       36.61       36.61
        DEC |         66        0.66       37.27
         DY |         68        0.68       37.95
         HR |          3        0.03       37.98
        MON |         66        0.66       38.64
         WK |         11        0.11       38.75
         YR |      6,125       61.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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