Frequencies for first 10,000 rows of prvdr_bsd_fac_sw variable in pos1994 dataset : provider | based | facility | Freq. Percent Cum. ------------+----------------------------------- | 6,708 67.08 67.08 N | 3,101 31.01 98.09 Y | 191 1.91 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 May 2017