Frequencies for first 10,000 rows of prov3290 variable in pos1999 dataset : srv: phys | extender-on | site-reside | nt | Freq. Percent Cum. ------------+----------------------------------- | 7,387 73.87 73.87 N | 2,176 21.76 95.63 Y | 437 4.37 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016