Frequencies for first 10,000 rows of urine variable in nhamcsed2011 dataset : Urinalysis | (UA) | Freq. Percent Cum. ------------+----------------------------------- No | 7,411 74.11 74.11 Yes | 2,589 25.89 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016