Frequencies for first 10,000 rows of age_cod variable in demo2014q1 dataset : Unit | abbreviatio | n for | patient's | age | Freq. Percent Cum. ------------+----------------------------------- | 1,962 19.62 19.62 DEC | 14 0.14 19.76 DY | 112 1.12 20.88 HR | 2 0.02 20.90 MON | 76 0.76 21.66 WK | 1 0.01 21.67 YR | 7,833 78.33 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 6 Apr 2017