Frequencies for first 10,000 rows of opthmlgy_srgry_sw variable in pos2017 data Surgical | Specialty: | Ophthalmolo | gic | Indicator | Freq. Percent Cum. ------------+----------------------------------- | 9,561 95.61 95.61 N | 217 2.17 97.78 Y | 222 2.22 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 9 Jan 2018