Frequencies for first 10,000 rows of prov3315 variable in pos1999 dataset : srv: | nursing-off | site-reside | nts | Freq. Percent Cum. ------------+----------------------------------- | 7,387 73.87 73.87 N | 2,495 24.95 98.82 Y | 118 1.18 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016