Frequencies for first 10,000 rows of opthmlgy_srgry_sw variable in pos2015 data Surgical | Specialty: | Ophthalmolo | gic | Indicator | Freq. Percent Cum. ------------+----------------------------------- | 9,578 95.78 95.78 N | 197 1.97 97.75 Y | 225 2.25 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016