Frequencies for first 10,000 rows of wt_cod variable in demo2015q2 dataset : Unit | abbreviatio | n for | patient's | weight | Freq. Percent Cum. ------------+----------------------------------- | 6,330 63.30 63.30 KG | 3,666 36.66 99.96 LBS | 4 0.04 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 6 Apr 2017