Frequencies for first 10,000 rows of ob_gyn_srgry_sw variable in pos1995 dataset : spec: | obstetrics/ | gynecology | Freq. Percent Cum. ------------+----------------------------------- | 9,552 95.52 95.52 N | 276 2.76 98.28 Y | 172 1.72 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 May 2017