Frequencies for first 10,000 rows of wt_cod variable in demo2013q4 dataset : Unit | abbreviatio | n for | patient's | weight | Freq. Percent Cum. ------------+----------------------------------- | 6,709 67.09 67.09 KG | 3,245 32.45 99.54 LBS | 46 0.46 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 6 Apr 2017