Frequencies for first 10,000 rows of prov3425 variable in pos2006 dataset : srv: | dental-onsi | te-resident | s | Freq. Percent Cum. ------------+----------------------------------- | 7,456 74.56 74.56 N | 765 7.65 82.21 Y | 1,779 17.79 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016