Frequencies for first 10,000 rows of rnlpn variable in nhamcsed2006 dataset : registered | nurse/lpn | seen | Freq. Percent Cum. ------------+----------------------------------- no | 1,398 13.98 13.98 yes | 8,602 86.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016