Frequencies for first 10,000 rows of physn_srvc_ofsite_nrsdnt_sw variable in pos1999 dataset : srv: | physician-o | ffsite-resi | dents | Freq. Percent Cum. ------------+----------------------------------- | 7,387 73.87 73.87 N | 2,040 20.40 94.27 Y | 573 5.73 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 May 2017