Frequencies for first 10,000 rows of otherstd variable in nhamcsopd1997 dataset : other std | test | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,842 98.42 98.42 1 | 158 1.58 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016