Frequencies for first 10,000 rows of age_cod variable in demo2018q4 dataset : Unit | abbreviatio | n for | patient's | age | Freq. Percent Cum. ------------+----------------------------------- | 2,750 27.50 27.50 DEC | 21 0.21 27.71 DY | 81 0.81 28.52 MON | 55 0.55 29.07 WK | 2 0.02 29.09 YR | 7,091 70.91 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 7 Mar 2019