Frequencies for first 10,000 rows of age_cod variable in demo2016q4 dataset : Unit | abbreviatio | n for | patient's | age | Freq. Percent Cum. ------------+----------------------------------- | 2,940 29.40 29.40 DEC | 18 0.18 29.58 DY | 91 0.91 30.49 HR | 1 0.01 30.50 MON | 61 0.61 31.11 WK | 1 0.01 31.12 YR | 6,888 68.88 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Sep 2017