Frequencies for first 10,000 rows of emt variable in nhamcsed2001 dataset : emergency | med tech | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,364 93.64 93.64 1 | 636 6.36 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016