Frequencies for first 10,000 rows of otherlab variable in nhamcsed2002 dataset : other lab | test | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,270 92.70 92.70 1 | 730 7.30 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016