Frequencies for first 10,000 rows of ethnic variable in nhamcsed1993 dataset : patient | ethnicity | Freq. Percent Cum. ----------------+----------------------------------- Hispanic Origin | 1,372 13.72 13.72 Not Hispanic | 8,628 86.28 100.00 ----------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016