Frequencies for first 10,000 rows of lpn variable in nhamcsed2003 dataset : lpn | Freq. Percent Cum. ------------+----------------------------------- no | 9,166 91.66 91.66 yes | 834 8.34 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016