Frequencies for first 10,000 rows of emt variable in nhamcsed2004 dataset : emergency | med tech | Freq. Percent Cum. ------------+----------------------------------- no | 9,216 92.16 92.16 yes | 784 7.84 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016