Frequencies for first 10,000 rows of dur_cod variable in ther2017q2 dataset : Unit | abbreviatio | n for | duration of | therapy | Freq. Percent Cum. ------------+----------------------------------- | 10,000 100.00 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 8 Feb 2018