Frequencies for first 10,000 rows of prov3370 variable in pos1995 dataset : srv: phys | ther-onsite | -non | resident | Freq. Percent Cum. ------------+----------------------------------- | 7,523 75.23 75.23 N | 2,365 23.65 98.88 Y | 112 1.12 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016