Frequencies for first 10,000 rows of age_cod variable in demo2007q4 dataset :

       Unit |
abbreviatio |
      n for |
  patient's |
        age |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      4,486       44.86       44.86
        DEC |         19        0.19       45.05
         DY |         75        0.75       45.80
        MON |         69        0.69       46.49
         WK |          5        0.05       46.54
         YR |      5,346       53.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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