Frequencies for first 10,000 rows of cad variable in namcs2014 dataset : Does | patient now | have: | coronary | heart | disease, | ischemic | heart | disease or | history | Freq. Percent Cum. ------------+----------------------------------- No | 9,327 93.27 93.27 Yes | 673 6.73 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 27 Mar 2017