Frequencies for first 10,000 rows of pt_onst_rsdnt_sw variable in pos2005 dataset : srv: phys | ther-onsite | -residents | Freq. Percent Cum. ------------+----------------------------------- | 7,474 74.74 74.74 N | 245 2.45 77.19 Y | 2,281 22.81 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 May 2017