Frequencies for first 10,000 rows of pt_onst_rsdnt_sw variable in pos1992 dataset : srv: phys | ther-onsite | -residents | Freq. Percent Cum. ------------+----------------------------------- | 7,366 73.66 73.66 N | 287 2.87 76.53 Y | 2,347 23.47 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 May 2017