Frequencies for first 10,000 rows of edhiv variable in nhamcsed2013 dataset : Does | patient | have: HIV | Freq. Percent Cum. ------------+----------------------------------- No | 9,879 98.79 98.79 Yes | 121 1.21 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 7 Nov 2016