Frequencies for first 10,000 rows of prov1155 variable in posclia2008 dataset : registered | nurse - | full time | Freq. Percent Cum. ------------+----------------------------------- 0 | 10,000 100.00 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016