Frequencies for first 10,000 rows of throatcx variable in nhamcsed2002 dataset : throat | culture | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,806 98.06 98.06 1 | 194 1.94 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016