Frequencies for first 10,000 rows of arthrtis variable in nhamcsopd2011 dataset : Does | patient now | have - | Arthritis | Freq. Percent Cum. ------------+----------------------------------- No | 8,946 89.46 89.46 Yes | 1,054 10.54 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016