Frequencies for first 10,000 rows of prov3515 variable in pos2003 dataset : srv: blood | admin-onsit | e-residents | Freq. Percent Cum. ------------+----------------------------------- | 7,305 73.05 73.05 N | 2,371 23.71 96.76 Y | 324 3.24 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 May 2017