Frequencies for first 10,000 rows of urine variable in namcs2012 dataset : Urinalysis | (UA) | Freq. Percent Cum. ------------+----------------------------------- No | 9,248 92.48 92.48 Yes | 752 7.52 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016