Frequencies for first 10,000 rows of prov3370 variable in pos1996 dataset : srv: phys | ther-onsite | -non | resident | Freq. Percent Cum. ------------+----------------------------------- | 7,254 72.54 72.54 N | 2,630 26.30 98.84 Y | 116 1.16 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016