Frequencies for first 10,000 rows of lpn variable in namcs2003 dataset : licensed | practical | nurse seen | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,156 91.56 91.56 1 | 844 8.44 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016