Frequencies for first 10,000 rows of bloodcx variable in nhamcsed2014 dataset : Blood | culture | Freq. Percent Cum. ------------+----------------------------------- No | 9,573 95.73 95.73 Yes | 427 4.27 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 11 Apr 2017