Frequencies for first 10,000 rows of prov3365 variable in pos1996 dataset : srv: phys | ther-onsite | -residents | Freq. Percent Cum. ------------+----------------------------------- | 7,254 72.54 72.54 N | 264 2.64 75.18 Y | 2,482 24.82 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016